Integration
Integration
Basic Level
1.
       sec x dx                                                                                                 [MP PET 1988,95; Rajasthan PET 1996]
                   x                                                                            
      (a) log tan     c                        (b) log(sec x  tan x )  c         (c) log   x   c                (d) log(sec x  tan c)  c
                  4 2                                                                        4    
2.
       5 sin x dx                                                                                                                          [MP PET 1988]
       (sec x  tan x) dx 
                              2
3.                                                                                                                                      [MP PET 1987, 92]
                                                         1
      (a) 2(sec x  tan x )  x  c                (b)     (sec x  tan x )3  c       (c) sec x (sec x  tan x )  c     (d) 2(sec x  tan x )  c
                                                         3
       cosec
                2
4.                  x dx is equal to                                                                                                         [MP PET 1999]
5.
       sec x tan x dx                                                                                                            [Rajasthan PET 2003]
       (3cosec
                    2
7.                      x  2 sin 3 x ) dx                                                                                                  [AI CBSE 1981]
                            2                                      2                                 2
      (a) 3 cot x            cos 3 x  c          (b)   3 cot x  cos 3 x   c     (c) 3 cot x      cos 3 x  c      (d) None of these
                            3                                      3                                 3
          1  cos 2 x
8.
           sin 2 x
                      dx                                                                                               [MP PET 1993; Ranchi BIT 1982]
9.    The value of
                               cot x dx      is                                                                                   [Rajasthan PET 1995]
      (a) log cos x  c                            (b) log tan x  c                   (c) log sin x  c                  (d) log sec x  c
                                    1
10.   The value of
                               (x  5)   2
                                              dx is
               1                                             1                                  2
      (a)         c                               (b)         c                     (c)            c                  (d)  2(x  5)3  c
             x 5                                          x 5                              (x  5)3
                                                                                                                                    Indefinite Integral 287
                  x2
11.
        x    2
                      4
                             dx equals to                                                                                                     [Rajasthan PET 2001]
        x
              2
12.               sec x 3 dx                                                                                                            [MNR        1986;   Roorkee
1975]
                                                                                                 1
        (a) log(sec x 3  tan x 3 )                     (b) 3(sec x 3  tan x 3 )          (c)     log(sec x 3  tan x 3 )         (d) None of these
                                                                                                 3
          cos 2 x  1
13.
         cos 2 x  1 dx                                                                                                                              [MP PET 2000]
         sin
                  1
14.                    (cos x)dx 
                  x                                          x 2                               x  x 2                                x  x 2
        (a)                                             (b)                                (c)                                     (d)
                   2                                           2                                     2                                        2
         (sin
                      1
15.                        x  cos 1 x ) dx                                                                                                          [MP PET 1990]
                   1                                                                                                                     
        (a)          x  c                             (b) x (sin 1 x  cos 1 x )  c   (c) x (cos 1 x  sin 1 x )  c        (d)       x c
                   2                                                                                                                     2
        x            (tan 1 x  cot 1 x ) dx 
              51
16.                                                                                                                                                    [MP PET 1991]
                      x 52                                                                       x 52
        (a)                (tan 1 x  cot 1 x )  c                                      (b)        (tan 1 x  cot 1 x )  c
                      52                                                                         52
                  x 52                                                                         x 52       
        (c)                          c                                                   (d)                  c
                      104         2                                                               52         2
                                           1
17.     The value of
                                      x   4
                                               dx is                                                                                          [Rajasthan PET 1995]
                     1                                         1                                   1                                          1
        (a)               c                            (b)        c                      (c)         c                          (d)           c
                    3x 3                                     3x 3                                4x3                                       3x 3
         a dx 
              x
18.                                                                                                                                           [Rajasthan PET 2003]
                    ax
        (a)              C                             (b) a x log a  C                  (c) log a  c                           (d) a x  C
                   log a
         a da 
              x
19.                                                                                                                                               [MP PET 1994, 96]
                     ax                                                                           ax
        (a)                C                           (b) a x log e a  C                (c)        C                           (d) None of these
                   log e a                                                                       x 1
         13
                  x
20.                   dx =                                                                                                                   [Kerala (Engg.) 2002]
                    13 x
        (a)               C                            (b) 13 x 1  C                    (c) 14 x  C                            (d) 14 x 1  C
                   log 13
        e
              x log a
21.                        . e x dx is equal to
                                                               (ae ) x                              ex
        (a) (ae) x                                      (b)                                (c)                                     (d) None of these
                                                              log( ae )                          1  log a
288 Indefinite Integral
      a
           3 x 3
22.                 dx                                                                                                                         [Roorkee 1977]
              a 3 x 3                                       a 3 x 3
      (a)              c                              (b)            c                (c) a 3 x  3 log a  c              (d) 3 a 3 x  3 log a  c
              log a                                          3 log a
      e
           log(sin x)
23.                      dx                                                                                                                     [MP PET 1995]
(a) sin x  c (b) cos x  c (c) e log cos x  c (d) None of these
                                e
                                     m log x
24.   The value of                             dx is
              x m 1                                         e m log x                         em                                  em
      (a)            k                                (b)             k               (c)         k                       (d)      k
              m 1                                              m                             log x                                 x
          e 5 log x  e 4 log x
25.
         e 3 log x  e 2 log x
                                dx                                                                                                                  [MNR 1985]
                                                                                              x3
      (a) e . 3 3 x  c                               (b) e 3 log x  c                (c)      c                          (d) None of these
                                                                                              3
                         1                5
26.   If f ' (x )          x and f (1)  , then f (x ) 
                         x                2
                           x2                                        x2                                x2                                   x2
      (a) log x              2                       (b) log x       1              (c) log x        2                 (d) log x        1
                           2                                         2                                 2                                    2
27.
          1  sin x dx                                                                                                                         [MP PET 1995]
              1    x     x                                 1    x     x
      (a)       sin  cos   c                       (b)     sin  cos   c         (c) 2 1  sin x  c                  (d)  2 1  sin x  c
              2    2     2                                 2    2     2
                         x
28.
          1  sin
                         2
                           dx                                                                                                     [IIT 1980; MP PET 1989]
              1    x     x                                     x     x                        x     x                            x     x
      (a)       cos  sin   c                       (b) 4  cos  sin   c          (c) 4  sin  cos   c              (d) 4  sin  cos   c
              4    4     4                                     4     4                        4     4                            4     4
29.
          1  sin 2 x dx  .......... ......, x  (0,  / 4 )                                                                                   [MP PET 1987]
      (a)  sin x  cos x                              (b) sin x  cos x                (c) tan x  sec x                    (d) sin x  cos x
             dx
30.
         1  sin x
                                                                                                                                                [MP PET 1991]
      (a) x  cos x  c                                (b) 1  sin x  c                (c) sec x  tan x  c                (d) sec x  tan x  c
          cos x  1
31.
       cos x  1 dx                                                                                                                       [MP PET 1989, 92]
                         x                                   1    x                                 1    x                                    x
      (a) 2 tan            x c                       (b)     tan  x  c              (c) x        tan  c                (d) x  2 tan      c
                         2                                   2    2                                 2    2                                    2
32.
          1  cos x dx equals                                                                                                           [Rajasthan PET 1996]
                            x                                              x                               x                                  x
      (a) 2 2 sin             c                       (b)  2 2 sin         c         (c)  2 2 cos        c              (d) 2 2 cos        c
                            2                                              2                               2                                  2
                    dx
33.
           x  x 2
                                                                                                                                                [MP PET 1990]
      (a)
              1 3/2
              3
                x   
                     (x  2)3 / 2  c                (b)
                                                             3
                                                               
                                                             2 3/2
                                                               x                  
                                                                    (x  2)3 / 2  c   (c)
                                                                                              1
                                                                                              3
                                                                                                                    
                                                                                                (x  2)3 / 2  x 3 / 2  c   (d)
                                                                                                                                   2
                                                                                                                                   3
                                                                                                                                                         
                                                                                                                                     (x  2)3 / 2  x 3 / 2  c
                                                                                                                                    Indefinite Integral 289
                       dx
34.
               x a  x b
                                                                                                                                                     [AISSE 1989]
      (a)
                      2
                   3(b  a)
                             
                            (x  a)3 / 2  (x  b)3 / 2  c                           (b)
                                                                                                2
                                                                                             3(a  b)
                                                                                                                               
                                                                                                      (x  a)3 / 2  (x  b)3 / 2  c
      (c)
                      2
                   3(a  b)
                             
                            (x  a)3 / 2  (x  b)3 / 2  c                           (d) None of these
           3x3  2 x
35.
              x
                     dx                                                                                                                           [Roorkee 1976]
           5(x 6  1)
36.
           x2 1
                      dx 
                                                                                                   5 3
      (a) 5(x 7  x ) tan 1 x  c                                                     (b) x 5      x  5x  c
                                                                                                   3
                           1
38.
        2 sin x  x  dx        is equal to                                                                                                    [MP PET 1999]
                                                                                                          1                                        1
      (a) 2 cos x  log x  C                       (b) 2 cos x  log x  C           (c)  2 sin x        C                  (d)  2 cos x       C
                                                                                                          x2                                       x2
39.
       sin 2 x cos 3 x dx                                                                                                                        [Roorkee 1976]
                   1        1                 1         1                                         1                                        1
      (a)            cos x  cos 5 x   c (b)    cos x  cos 5 x   c              (c) cos x       cos 5 x  c              (d) cos x      cos 5 x  c
                   2        5                 2         5                                         5                                        5
                                             1
40.   If
                (sin 2 x  cos 2 x)dx       2
                                                     sin(2 x  a)  b, then                                                      [Roorkee 1978; MP PET 2001]
                                                                                               5                                          5
      (a) a               ,b  0                    (b) a            ,b  0         (c) a       , b  any constant           (d) a        , b  any constant
                       4                                            4                             4                                           4
                                             1
41.   If
                (sin 2 x  cos 2 x ) dx        2
                                                     sin(2 x  c)  a, then the value of a and c is                                                [Roorkee 1978]
                                                                                                           
      (a) c             and a  k (an arbitrary constant)                             (b) c       and a 
                       4                                                                           4         2
                       
      (c) c             and a is an arbitrary constant                                (d) None of these
                       2
                                          cos 8 x
42.   If
                sin 5 x cos 3 x dx       16
                                                   A, then A=                                                                                     [MP PET 1992]
                   sin 2 x                                      cos 2 x
      (a)                   constant                (b)                constant     (c) Constant                              (d) None of these
                     16                                           4
43.   If
                   2 1  sin x dx  4 cos(ax  b)  C then the value of (a,b) is                                                                 [UPSEAT 2002]
                   1                                           
      (a)           ,                                (b) 1,                            (c) 1,1                                   (d) None of these
                   2 4                                          2
290 Indefinite Integral
          sin x  cosec x
44.
              tan x
                          dx 
      (a) sin x  cosec x  c                (b) cosec x  sin x  c         (c) log tan x  c                         (d) log cot x  c
                 1
45.
           1  sin x
                         dx                                                                                                         [Rajasthan PET 1996]
                       x                         1             x                            x                           1             x 
      (a) 2 2 log tan     c (b)                      log tan     c   (c)       2 log tan     c             (d)            log tan     c
                      8 4                          2           8 4                           8 4                          2 2           8 4
          sin 2 x  cos 2 x
46.
          sin 2 x cos 2 x
                            dx                                                                                                            [MP PET 1996]
      (a) tan x  cot x  c                  (b) tan x  cosec x  c         (c)  tan x  cot x  c                   (d) tan x  sec x  c
          1  tan x
47.
       1  tan x dx                                                                                                                      [MP PET 1994]
                                                                                      
      (a) log sec   x   c                (b) log cos   x   c         (c) log sin  x   c                    (d) None of these
                  4                                    4                            4    
          cos 2 x
48.
       cos x         dx is equal to                                                                                                 [Rajasthan PET 1991]
          (1  x )3
49.
               x
                      dx equals                                                                                                      [Rajasthan PET 1990]
                 1     3x  2                      1     3x  2                     1     3x  2                                1     3x  2
      (a)          log        c             (b)     log        c           (c)      log        c                    (d)        log        c
                12     3x  2                      6     3x  2                    12     3x  2                                6     3x  2
                dx
51.
      a    2
                 x2
                     is equal to                                                                                                                 [DCE 2002]
52.
           x 2  a 2 dx is equal to                                                                                                 [Rajasthan PET 2001]
                x                 a2                                               x                  a2
      (a)            x 2  a2       log {x  x 2  a 2 }  C                (b)         x 2  a2       log {x  x 2  a 2 }  C
                2                  2                                               2                   2
                x                 a2                                               x                  a2
      (c)            x 2  a2       log {x  x 2  a 2 }  C                (d)         x 2  a2       log {x  x 2  a 2 }  C
                2                  2                                               2                   2
                dx
53.
       4x      2
                  9
                     =                                                                                   [MP PET 1991; Roorkee 1977; MNR 1974]
                1         2x                     3         2x                  1         2x                               1         3x 
      (a)         tan 1     c            (b)     tan 1     c         (c)     tan 1     c                   (d)        tan 1     c
                2         3                      2         3                   6         3                                6         2 
54.
       (x  a)(x  b)(x  c)......... .(x  z)dx    is equal to
               1 2                                      1 2
      (a)        x c                             (b)     x c                                (c) x  c                                 (d)  x  c
               2                                        2
           cosec   cot 
58.
       cosec   cot  d 
      (a) 2cosec   2 cot     c (b) 2 cosec   2 cot     c                          (c) 2 cosec   2 cot     c           (d) None of these
       (e
             a log x
59.                     e x log a ) dx 
                           ax                           x a1                                        x a1   ax
      (a) x a1                c                (b)          a x log a  c                 (c)               c                     (d) None of these
                          log a                         a 1                                         a  1 log a
                          dx
60.
       4 cos      3
                       2 x  3 cos 2 x
                                       
               1                                  1
      (a)        log sec 6 x  tan 6 x   c (b)   log sec 6 x  tan 6 x   c              (c) log sec 6 x  tan 6 x   c          (d) None of these
               3                                  6
Advance Level
                   dx
61.
       sin    2
                   x cos 2 x
                                                                                                                                 [Roorkee1976; Rajasthan PET 1991]
      (a) tan x  cot x  c                       (b) cot x  tan x  c                       (c) tan x  cot x  c                     (d) None of these
           cos 2 x  cos 2
62.
           cos x  cos 
                            dx                                                                                                                              [MP PET 1994]
      (a) 2[sin x  x cos  ]  c                 (b) 2[sin x  sin  ]  c                   (c) 2[ sin x  x cos  ] + c             (d) 2[sin x  sin  ]  c
                   8            8
             sin x  cos x
63.
       1  2 sin  2
                     x cos 2 x
                               dx                                                                                                                                  [IIT 1986]
                                                           1                                         1
      (a) sin 2 x  c                             (b)       sin 2 x  c                      (c)      sin 2 x  c                      (d)  sin 2 x  c
                                                           2                                         2
      (a) log(sec x  tan x )  c                 (b) log(sec x  tan x )1 / 2  c            (c) log sec x (sec x  tan x )  c        (d) None of these
                cos 4 x  1
65.   If
            cot x  tan x dx  A cos 4 x  B, then
                       1                                     1                                          1
      (a) A                                      (b) A                                      (c) A                                    (d) None of these
                       2                                      8                                           4
                                                                                                                 1/2
                                                                                           dx  2  dy  2 
66.   If x  f "(t) cos t  f ' (t) sin t, y   f "(t) sin t  f ' (t) cos t, then
                                                                                              
                                                                                           dt    dt  
                                                                                                                       dt is equal to                              [SCRA 1999]
      (a) f ' (t)  f "(t)  c                    (b) f "(t)  f ' "(t)  c                   (c) f (t)  f "(t)  c                    (d) f ' (t)  f "(t)  c
292 Indefinite Integral
67.   If f (0 )  f ' (0 ) = 0 and f  (x )  tan 2 x then f (x ) is
                            1 2                                 1 2                                  1 2
      (a) log sec x          x              (b) log cos x       x              (c) log sec x        x            (d) None of these
                            2                                   2                                    2
                 cos 2 x
68.
       (sin x  cos x )    2
                                dx is equal to
                      1
      (a)                     C             (b) log(sin x  cos x )  C         (c) log(sin x  cos x )  C        (d) log(sin x  cos x )2  C
                sin x  cos x
                cos 4 x                             x
69.   If
                   2
                sin x
                        dx  A cot x  b sin 2 x  C  D, then
                                                    2
      (a) A  2                             (b) B  1 / 4                      (c) C  3                         (d) None of these
                 tan x
70.
       sec x  tan x dx 
      (a) sec x  tan x  x  c              (b) sec x  tan x  x  c           (c) sec x  tan x  x  c          (d)  sec x  tan x  x  c
Integration by substitution
Basic Level
                                  x
71.   A primitive of                  is                                                                                                     [SCRA 1996]
                                x2 1
                                                                                       log e (x 2  1)                    1
      (a) log e (x 2  1)                    (b) x tan 1 x                      (c)                                (d)     x tan 1 x
                                                                                              2                           2
                                  x3
72.   The value of
                                1  x4
                                          dx is                                                                                              [SCRA 1996]
                                                                                       1                                    1
      (a) (1  x 4 )1 / 2  c                (b)  (1  x 4 )1 / 2  c           (c)     (1  x 4 )1 / 2  c        (d)      (1  x 4 )1 / 2  c
                                                                                       2                                    2
            1 x
73.
           1x
                 dx                                                                                                         [Rajasthan PET 2002]
      x
            x
74.             (1  log x )dx is equal to
                                                                                                                          1
      (a) x x                                (b) x 2 x                           (c) x x log x                      (d)     (1  log x ) 2
                                                                                                                          2
           (x  1)(x  log x )2
75.
                   x
                                dx                                                                                                      [AI CBSE 1986]
                1                                  1                                   1
      (a)         (x  log x )  c           (b)     (x  log x ) 2  c          (c)     (x  log x ) 3  c         (d) None of these
                3                                  3                                   3
             x2 1
76.
          x (x 2  1)
                       dx is equal to                                                                                                    [MP PET 1999]
                    x2 1                                 x2 1                              x                                    x
      (a) log             C                 (b)  log          C               (c) log         C                 (d)  log         C
                      x                                     x                              x2 1                                x2 1
                                                                                                                               Indefinite Integral 293
                         1
77.
       x (x2        4
                          1)3 / 4
                                   dx                                                                [IIT 1984; Rajasthan PET 2000; UPSEAT 2001]
                                                                                                                                  4 4
                                                                                                                                    (x  1)3 / 4
          (x 4  1)1 / 4                              (x 4  1)1 / 4                  3 (x 4  1)3 / 4                            3
      (a)                c                     (b)                 c           (c)                  c                     (d)                c
                x                                           x                         4       x                                        x
       x cos x
                         2
78.                          dx is equal to                                                                                                     [MP PET 1999]
                     1                                  1                                 1                                         1
      (a)             sin 2 x  C              (b)       sin 2 x  C             (c)      sin x 2  C                       (d)     sin x 2  C
                     2                                  2                                 2                                         2
      e
            x
79.                 cosec 2 (2e  x  5) dx                                                                                                        [AISSE 1988]
                 1                                        1
      (a)          cot(2e  x  5)  c          (b)        cot(2e  x  5)  c   (c) 2 cot(2e  x  5)  c                   (d)  2 cot(2e  x  5)  c
                 2                                        2
            1  tan x
80.
       x  log sec x dx                                                                                                                       [AI CBSE 1986]
      (a) log( x  log sec x )  c              (b)  log( x  log sec x )  c    (c) log( x  log sec x )  c                (d) None of these
                     3
                 x
81.
           x2  2
                             dx 
                 1 2                                                                    1 2
      (a)          (x  2)3 / 2  2(x 2  2)1 / 2  c                             (b)     (x  2)3 / 2  2(x 2  2)1 / 2  c
                 3                                                                      3
                 1 2                                                                    1 2
      (c)          (x  2)3 / 2  (x 2  2)1 / 2  c                              (d)     (x  2)3 / 2  (x 2  2)1 / 2  c
                 3                                                                      3
      x
            3
82.                  3  5 x 4 dx                                                                                                                  [DSSE 1982]
                                                        1                                1
      (a) (3  5 x 4 )3 / 2  c                 (b)       (3  5 x 4 )3 / 2  c   (c)      (3  5 x 4 )3 / 2  c              (d) None of these
                                                        5                               30
       sin
                2
83.                  x cos x dx is equal to                                                                                                         [SCRA 1996]
                                                                                        1
      (a) (1  log x )3  c                     (b) 3(1  log x )3  c            (c)     (1  log x )3  c                   (d) None of these
                                                                                        3
                sin x dx
85.
       (a  b cos x )         2
                                    
                 1                                            1                         1
      (a)          (a  b cos x )  c           (b)                     c        (c)     log( a  b cos x )  c              (d) None of these
                 b                                      b(a  b cos x )                 b
                            x                                          x                                                      x                                   x
      (a) 2a                        log e a  c      (b) 2a                    log a e  c                        (c) 2a           log 10 a  c         (d) 2a        log a 10  c
              t
89.
      e      3t2
                       dt                                                                                                                                                  [MP PET 1997]
       xe
                  x2
90.                    dx                                                                                                                           [SCRA 1996; Rajasthan PET 2003]
                                2                              2
                        ex                                 ex                                                           ex                                      ex
      (a)                 C                        (b)      C                                                  (c)      C                           (d)       C
                         2                                  2                                                           2                                       2
      e
                  x
91.                   dx is equal to                                                                                                                                        [MP PET 1988]
                        x                                  1               x                                                                x                                  x
      (a) e                     A                   (b)     e                  A                                (c) 2( x  1)e                A      (d) 2( x  1)e             A
                                                           2
      (A is an arbitrary constant)
                  x
          e
92.
                 x
                       dx                                                                                                                                                         [DCE 1999]
                                                                   x
                        x                                  e                                                                  x                                       x
      (a) e                                          (b)                                                          (c) 2 e                               (d)     xe
                                                               2
              a dx
93.
       b  ce              x
                                                                                                                                                      [MP PET 1988;               BIT Ranchi
1978]
                      a      ex                          a      b  ce x                                            b      ex                           b      b  ce x 
      (a)               log         x 
                                         k          (b)     log      x    k                                   (c)     log         x 
                                                                                                                                           k           (d)     log      x    k
                      b      b  ce                    b      e                                                 a      b  ce                     a      e       
                       1
94.
       (e        x
                       e  x )2
                                 dx 
                                    1                                  1                                                          1
      (a)                          2x
                                                c   (b)           2x
                                                                                      c                          (c)        2x
                                                                                                                                           c           (d) None of these
                        2(e               1)              2(e                  1)                                       e           1
          e 2x  1
95.
         e 2x  1
                   dx                                                                                                                                                      [MP PET 1987]
                      e 2x  1
      (a)                      c                    (b) log( e 2 x  1)  x  c                                  (c) log( e 2 x  1)  c               (d) None of these
                      e 2x  1
          e 2x  1
96.
         e 2x  1
                   dx equals                                                                                                                                      [Rajasthan PET 1996]
                        1                                     ex                                                          1
      (a)                                            (b)                                                          (c)                                   (d) None of these
                      1e           x
                                                           1ex                                                         1  ex
                                                                                                                                     Indefinite Integral 295
       e                (x 4  1)1 dx 
            3 log x
99.                                                                                                                                                          [MP PET 2001]
                                                                1
       (a) log( x 4  1)  c                              (b)     log( x 4  1)  c          (c)  log( x 4  1)  c                (d) None of these
                                                                4
                     1
           e tan x
100.
           1  x2
                   dx                                                                                                                                       [MP PET 1987]
                                                                               1                        1                                             1
       (a) log(1  x 2 )  c                              (b) log e tan             x
                                                                                        c   (c) e tan        x
                                                                                                                  c                (d) tan 1 e tan         x
                                                                                                                                                                 c
                         1
           e m tan x
101.
           1  x2
                     dx equals to                                                                                                             [Rajasthan PET 2001]
                          1                                    1 tan 1 x                         1 m tan 1 x
       (a) e tan               x
                                                          (b)     e                          (c)     e                              (d) None of these
                                                                m                                  m
       e
            cos 2 x
102.                      sin 2 x dx                                                                                                                        [AI CBSE 1995]
                          2                                                2                       1 cos 2 x
       (a) e cos              x
                                   c                     (b)  e cos          x
                                                                                   c        (c)     e       c                     (d) None of these
                                                                                                   2
       e
             x
103.             sin(e x )dx                                                                                                                                [MP PET 1995]
             dx
104.
       e    x
              1
                                                                                                                                                            [MP PET 1989]
                          1                                            1                                      1                                   1
                     x                                           x                                 x2                                    x2
                                                                                                                                                  x2   c
       (a) e              x       c                      (b) e        x   c                (c) e            x   c                (d) e
                     2
                 x
106.
            1 x3
                                  dx equals                                                                                                   [Rajasthan PET 1987]
                 2                                              2                                 1                                      1
       (a)         1  x3  c                             (b)      1  x3  c                (c)     1  x3  c                     (d)      1  x3  c
                 3                                              3                                  3                                      3
                 x
107.
       1 x          4
                              dx                                                                                                         [IIT 1978; UPSEAT 2002]
                 1                                              1
       (a)         cot 1 x 2  c                         (b)     tan 1 x 2  c             (c) cot 1 x 2  c                     (d) tan 1 x 2  c
                 2                                              2
            3x 2
108.
       x    6
                 1
                              dx                                                                                  [MNR 19981; MP PET 1988; Rajasthan PET 1995]
                                                                                                                                                  x3        
       (a) log( x 6  1)  c                              (b) tan 1 (x 3 )  c              (c) 3 tan 1 (x 3 )  c                (d) 3 tan 1           c
                                                                                                                                                             
                                                                                                                                                   3        
                     1
109.
            1  e 2x
                                   dx                                                                                  [MP PET 1993, 2002; Rajasthan PET 1999]
                                                                                         1
       (a) log  tan x  tan 2 x  4   c                                         (b)     log  tan x  tan 2 x  4   c
                                                                                     2                         
               1        1             
       (c) log  tan x    tan 2 x  4   c                                       (d) None of these
                2       2             
111.
        cos x            4  sin 2 x dx 
                 1                              1                                      1                              1      
       (a)         sin x 4  sin 2 x  2 sin 1  sin x   c                      (b)     sin x 4  sin 2 x  2 sin 1  sin x   c
                 2                              2                                      2                              2      
                 1                            1      
       (c)         sin x 4  sin 2 x  sin 1  sin x   c                        (d) None of these
                 2                            2      
                  3x 2
112.
            9  16 x 6
                                 dx 
                 1          4x3                        1          4x3                1                                         1
       (a)         sin 1              c
                                                  (b)     sin 1        c
                                                                                  (c)     sin 1 x 3  c                    (d)     sin 1 x 3  c
                 4          3                          3          3                  4                                         3
                  x
113.
            4  x4
                            dx =                                                                                                               [Roorkee 1976]
                            x2                           1        x2                            x2                                   1        x2
       (a) cos 1                                  (b)     cos 1                  (c) sin 1                                (d)       sin 1
                            2                            2        2                             2                                    2        2
             ax
114.                      dx                                                                                                                 [MNR 1983, 87]
           1  a2 x
                   1                                                                       1
       (a)             sin 1 a x  c              (b) sin 1 a x  c              (c)         cos 1 a x  c                (d) cos 1 a x  c
                 log a                                                                   log a
              sin x dx
115.
        3  4 cos          2
                                x
                                                                                                                                    [Karnataka CET 2000]
                 1                                                                       1
       (a)          log( a 2  b 2 sin 2 x )  c                                   (b)     log( a 2  b 2 sin 2 x )  c
                 b2                                                                      b
       (c) log( a 2  b 2 sin 2 x )  c                                            (d) b 2 log( a2  b 2 sin 2 x )  c
                  sin x cos x
117.
        a cos     2
                     x  b sin 2 x
                                   dx                                                                                                    [AI CBSE 1988, 89]
                    1                                                                      1
       (a)                log( a cos 2 x  b sin 2 x )  c                         (b)        log( a cos 2 x  b sin 2 x )  c
                 2(b  a)                                                                b a
                 1
       (c)         log( a cos 2 x  b sin 2 x )  c                                (d) None of these
                 2
                      1
118.
       x        1  log x
                                    dx                                                                                                         [Roorkee 1997]
                 2
       (a)         (1  log x )3 / 2  c           (b) (1  log x )3 / 2  c       (c) 2 1  log x  c                       (d)    1  log x  c
                 3
                                                                                                                           Indefinite Integral 297
                  dx
119.
        x  x log x                                                                                                      [MP PET 1993; Roorkee1977]
(a) log(1  log x ) (b) log log(1  log x ) (c) log x  log(log x ) (d) None of these
                 sin 2 x
120.
        1  sin         2
                             x
                                 dx                                                                                                         [Roorkee 1976]
                                                                                     1
       (a) log sin 2 x  c                      (b) log(1  sin 2 x )  c      (c)     log(1  sin 2 x )  c              (d) tan 1 (sin x )  c
                                                                                     2
            sec 2 x
121.
          1  tan x
                     dx                                                                                                                      [MP PET 1987]
                                                                                                                                        1
       (a) log(cos x  sin x )  c              (b) log(sec 2 x )              (c) log(1  tan x )                        (d) 
                                                                                                                                  (1  tan x ) 2
           cosec 2 x
122.
          1  cot x
                     dx                                                                                                                            [MNR 1973]
                                                                                             1
       (a) log(1  cot x )  c                  (b)  log(1  cot x )  c      (c)                      c                (d) None of these
                                                                                     2(1  cot x ) 2
             1
123.
            x
                  sin x dx                                                                                                                   [MP PET 1989]
                      1                                                              1
       (a)             cos x  c               (b)  2 cos x  c              (c)     cos       x c                     (d) 2 cos x  c
                      2                                                              2
             x 1
124.
            1  x2
                             dx                                                                                                              [MP PET 1991]
                 3x
125.
            9x 1
                             dx                                                                                                              [EAMCET 202]
                   1                                                                   1
       (a)             log | 3 x  9 x  1 | c                                (b)         log | 9 x  9 x  1 | c
                 log 3                                                               log 3
                   1                                                                   1
       (c)             log | 3 x  9 x  1 | c                                (d)         log | 3 x  9 x  1 | c
                 log 9                                                               log 9
                                             1  log x
126. To find the value of
                                                 x
                                                       dx , the proper substitution is                                                        [MP PET 1988]
                                                                                     1
       (a) log x  t                            (b) 1  log x  t              (c)     t                                 (d) None of these
                                                                                     x
           10 x 9  10 x log e 10
127.
               10 x  x 10
                                  dx                                                                                                               [MNR 1979]
                      1      1                                                       1      1
       (a)                                     (b) log(10 x  x 10 )  c      (c)                    c                  (d) None of these
                      2 (10  x 10 ) 2
                           x
                                                                                     2 (10  x 10 ) 2
                                                                                          x
                 sin x
128.
        sin(x  ) dx                                                                                 [Rajasthan PET 1999; Kerala (Engg.) 2002]
       (a) x cos   sin  log sin( x   )  c                                (b) x cos   sin  log sin( x   )  c
       (c) x sin   sin  log sin( x   )  c                                (d) None of these
298 Indefinite Integral
           2 x tan 1 x 2
129.
                1 x4
                                   dx                                                                                                                 [Roorkee 1982]
                                                            1
       (a) [tan 1 x 2 ] 2  c                      (b)       [tan 1 x 2 ] 2  c        (c) 2[tan 1 x 2 ] 2  c                   (d) None of these
                                                            2
                            2x
        tan
                  1
130.                               dx                                                                                                                  [MP PET 1991]
                       1 x2
       (a) x tan 1 x  c                           (b) x tan 1 x  log(1  x 2 )  c   (c) 2 x tan 1 x  log(1  x 2 )  c       (d) 2 x tan 1 x  log(1  x 2 )  c
        sin
                 1
131.                  (3 x  4 x 3 ) dx                                                                                                  [AISSE 1986; DSSE 1984]
(a) log(log sin x )  c (b) log(log cosec x )  c (c) 2 log(log sin x )  c (d) None of these
                  1                                                                            [ f (x )]3
       (a)          [ f ( x )] 2                    (b) [ f (x )]3                       (c)                                        (d) [ f (x )]2
                  2                                                                                 3
                                                                                                       1
       (a) 2 x 2  2  k                            (b)      x2  2 k                   (c)                     k                 (d) None of these
                                                                                               (x 2  2)3 / 2
        x sec x
                        2
137.                        dx is equal to
                  1                                                                            x2
       (a)          log(sec x 2  tan x 2 )  k                                          (b)      log(sec x 2  tan x 2 )  k
                  2                                                                            2
       (c) 2 log(sec x 2  tan x 2 )  k                                                 (d) None of these
                    1                                                                            1
       (a)             { f (ax  b)}n 1  c, n except n  1                           (b)        { f (ax  b)}n 1  c, n
                  n 1                                                                         n 1
                     1                                                                            1
       (c)                 { f (ax  b)}n1  c,  n except n  1                       (d)            { f (ax  b)}n 1  c, n
                  a(n  1)                                                                     a(n  1)
           sin x  cos x
139.
            1  sin 2 x
                                   e sin x cos x dx is equal to
       (a) e sin x  c                              (b) e sin x cos x  c               (c) e sin x cos x  c                     (d) e cos x sin x  c
                 5x
       5
                            x
             5
140.                  . 5 5 . 5 x dx is equal to
                            x                                                                         5x
                       55                                    55
                                                                  x
                                                                            3                    55
       (a)                         c               (b) 5             (log 5)  c        (c)                c                      (d) None of these
                 (log 5 ) 3                                                                    (log 5) 3
                                                                                                                               Indefinite Integral 299
                     2x
141. If
                   14       x
                                  dx  k sin 1 (2 x )  c, then k is equal to
                                                           1                                  1                                       1
       (a) log 2                                     (b)     log 2                     (c)                                    (d)
                                                           2                                  2                                     log 2
                         1
142.
                    3
               sin x cos x
                                       dx is equal to
                     2                                                                            2
       (a)                        c                 (b) 2 tan x  c                   (c)                c                  (d)  2 tan x  c
                     tan x                                                                        tan x
           sec x dx
143.
              cos 2 x
                              
                                                                                                                                     sin x
       (a) sin 1 (tan x )                           (b) tan x                         (c) cos 1 (tan x )                    (d)
                                                                                                                                     cos x
                x dx
144.
        1  x cot x 
       (a) log(cos x  x sin x )  c                 (b) log( x sin x  cos x )  c    (c) log(sin x  x cos x )  c          (d) None of these
                                                 2
                                             sec x
145. To evaluate
                                    (1  tan x)(2  tan x) dx , the most suitable substitution is
       (a) 1  tan x  t                             (b) 2  tan x  t                 (c) tan x  t                          (d) None of these
                                                                                        2
146. For which of the following functions, the substitution x                                t is applicable
                                                                   1  2x 
       (a)
                x
                         6
                             tan 1 x 3 dx           (b)
                                                            tan              dx
                                                                     1  x 2 
                                                                                       (c)
                                                                                              x
                                                                                                   3
                                                                                                       cos x 2 dx             (d) None of these
                1  x2
147.
          x
                1  x2
                       dx 
                1                                                                             1
       (a)        [sin 1 x 2  1  x 4 ]  c                                          (b)      [sin 1 x 2  1  x 2 ]  c
                2                                                                             2
                    1                                          1                                  1       1
       (a)                c                         (b)             c                (c)                       c          (d) None of these
                tan x  1                                  1  tan x                              3 (1  tan x )3
        sec
                p
149.                 x tan x dx 
Advance Level
                   x              x ax                                                            x        x       ax 
       (a) a in 1                 .    C                                      (b) a sin 1                          C
                  a              a   a                                                          a        a        a 
                                x     x   ax    
       (c)  a sin 1                           C                              (d) None of these
                               a     a    a     
               sin x
152.
        sin x  cos x dx                                                                                                                       [Roorkee 1988]
              1                                                                          1
       (a)      log(sin x  cos x )  x  c                                        (b)     [log(sin x  cos x )  x ]  c
              2                                                                          2
              1                                                                          1
       (c)      log(cos x  sin x )  x  c                                        (d)     [log(cos x  sin x )  x ]  c
              2                                                                          2
           1 x2
153.
            1 x2
                       dx                                                                                                                             [IIT 1977]
              3           1                                                              3           1
       (a)      sin 1 x  x 1  x 2  c                                           (b)     sin 1 x  x 1  x 2  c
              2           2                                                              2           2
              3           1                                                              3           1
       (c)      cos 1 x  x 1  x 2  c                                           (d)     cos 1 x  x 1  x 2  c
              2           2                                                              2           2
                
154. If I  sec 4 x cosec 2 x dx  K tan 3 x  L tan x  M cot x  constant , then
                     1                                         1
       (a) K          , L  1, M  2            (b) K          , L  2, M  1   (c) K  1, L  0, M  1                        (d) None of these
                     3                                         3
           log( x  1)  log x
155.
                x (x  1)
                               dx 
                  x 1                                                                       x  1 
       (a)  log      c                                                         (b)  log log       c
                  x                                                                          x 
             1   x 1 
                                                                                                                              
                           2
                                                                                               1
       (c)    log     c                                                    (d) c        log( x  1)2  (log x ) 2
              2    x                                                                   2
               dx
156.
            1  sin x
                             
(c) 2 logsec (x / 2   / 4)  tan( x / 2   / 4) (d) All (a), (b) and (c)
               x 1
157.
        x(1  xe      x 2
                         )
                             dx  log | 1  f (x )|  f (x )  c , then f (x ) 
                1                                          1                                    1
       (a)                                       (b)                               (c)                                             (d) None of these
              x ex                                    1  xe   x
                                                                                         (1  xe x ) 2
                                                                                                                         1
158. If l r (x ) means log log log ...... log x, the log being repeated r times, then
                                                                                                          xl(x)l (x )l (x)..... l (x ) dx 
                                                                                                                   2     3          r
                                                       l r 1 (x )
       (a) l r 1 (x )  c                       (b)               c              (c) l r (x )  c                                (d) None of these
                                                         r 1
                                                                                                                                              Indefinite Integral 301
                     1                                          x 2 1                       1
       (a) log         sec( x 2  1)              (b) log sec         
                                                                                        (c)     log sec( x 2  1)                        (d) None of these
                     2                                          2                            2
               
                              1x    
                                      
        cos 2 tan
                          1
160.                                   dx is equal to
                               1 x   
                                      
               1 2                                        1 2                                  1
       (a)       (x  1)  k                      (b)       x k                         (c)     x k                                     (d) None of these
               8                                          2                                    2
                                                                                                                             x
                                                                                                                                          3
                                                                                                                                  2
161. Let the equation of a curve passing through the point (0,1) be given by y                                                       . e x dx .   If the equation of the
             cos x  cos 3 x
162.
              1  cos 3 x
                             dx is equal to
               2                                          3                                    2
       (a)       sin 1 (cos 3 / 2 x )  c        (b)       sin 1 (cos 3 / 2 x )  c    (c)     cos 1 (cos 3 / 2 x )  c                (d) None of these
               3                                          2                                    3
                                             ax 2  b
163. The value of
                                x     c 2 x 2  (ax 2  b)2
                                                                 dx is
                     b                                   2     b                                         b                                   2     b 
                ax  x                                   ax  2                                      ax                                     ax  2 
                     1                                        1x  k                              1      x  k                                1  x  k
       (a) sin         k                       (b) sin                               (c) cos                                          (d) cos
                c                                           c                                        c                                          c    
                                                                                                                                                     
                                                                                                                                                     
             1 x 
164.
                   dx 
             1  x 
                   
                                                                                                                                                                      [IIT 1985]
                   sin 2 x
165.
        sin   4
                   x  cos 4 x
                               dx                                                                                                                  [Rajasthan PET 1995]
(a) cot 1 (tan 2 x )  c (b) tan 1 (tan 2 x )  c (c) cot 1 (cot 2 x )  c (d) tan 1 (cot 2 x )  c
        tan
               3
166.               2 x sec 2 x dx                                                                                                                                    [IIT 1977]
               1            1                1            1                                    1            1
       (a)       sec 3 2 x  sec 2 x  c (b)   sec 3 2 x  sec 2 x  c                   (c)     sec 2 2 x  sec 2 x  c                  (d) None of these
               6            2                6            2                                    9            3
                                     (x 2  a 2 )
167. The value of
                                        x
                                                  dx will be                                                                                                [UPSEAT 1999]
                                          (x 2  a 2 )                                                                  (x 2  a 2 ) 
       (a)         (x 2  a 2 )  tan 1                                               (b)       (x 2  a 2 )  tan 1               
                                              a                                                                             a        
                                                                                                                                     
                                                                                                        x
       (c)         (x 2  a 2 )  a 2 tan 1  x 2  a 2                                (d) tan 1       c
                                                                                                    a
302 Indefinite Integral
Integration by Parts
Basic Level
            (1  x
                        2
168.                         ) log x dx                                                                                                                           [DSSE 1982]
                     x3                           3                                                    x3                   3   
           (a)  x                log x   x  x     c                                     (b)  x        log x   x  x     c
                      3                           9                                                      3                   9    
                                                                                                                                
                     x 3                3 
           (c)  x         log x  x  x   c                                                (d) None of these
                      3           
                                          9 
               1
169.
           x    2
                     log( x 2  a 2 ) dx                                                                                                                            [MNR 1980]
                     1                   2      x                                                        1                   2      x
           (a)         log( x 2  a 2 )  tan 1  c                                             (b)      log( x 2  a 2 )  tan 1  c
                     x                   a      a                                                        x                   a      a
                        1                   2      x
           (c)           log( x 2  a 2 )  tan 1  c                                          (d) None of these
                        x                   a      a
               log x
170.
               x3
                     dx                                                                                                                                         [Roorkee 1986]
                      1                                           1                                     1                                           1
           (a)           (2 log x  1)  C               (b)        (2 log x  1)  C           (c)       (2 log x  1)  C                 (d)       (1  2 log x )  C
                     4x2                                         4x2                                   4x2                                         4x2
       
171. x 3 log x dx                                                                                                                                    [Karnataka CET 2002]
                     x 4 log x                                  1                                1                                                  1
           (a)                 C                        (b)      [4 x 4 log x  x 4 ]  C (c)     [4 x 4 log x  4 x 2 ]  C                (d)      [4 x 4 log x  x 4 ]  C
                         4                                     16                                8                                                 16
            x sin
                        1
172.                         x dx                                                                                                                               [MP PET 1991]
                 x 2 1  1      x                                                                    x 2 1  1      x
           (a)       sin x    1 x2 c                                                     (b)       sin x    1 x2 c
                  2  4          4                                                                     2  4          4
                 x 2 1  1      x                                                                    x 2 1  1      x
           (c)       sin x    1 x2 c                                                     (d)       sin x    1  x2  c
                  2  4          4                                                                     2  4          4
173.
            cos(log         e   x )dx is equal to                                                                                                               [MP PET 2003]
                     1
           (a)         x {cos(log e x )  sin(log e x )}                                         (b) x{cos(log e x )  sin(log e x )}
                     2
                     1
           (c)         x {cos(log e x )  sin(log 2 x )}                                         (d) x{cos(log e x )  sin(log e x )}
                     2
                 2x   sin 4 x  2 
175.
           e                      dx 
                      1  cos 4 x 
                                                                                                                                         [Mathematics Olympiad 1986]
                     1 2x                                        1 2x
           (a)         e cot 2 x  c                     (b)      e cot 2 x  c                 (c)  2e 2 x cot 2 x  c                    (d) 2e 2 x cot 2 x  c
                     2                                           2
                                                                                                                        Indefinite Integral 303
176.
        x cos x dx                                                                                                                          [MP PET 1988]
(a) x sin x  cos x (b) x sin x  cos x (c) x cos x  sin x (d) x cos x  sin x
        x cos
                      2
177.                      x dx                                                                                                                      [IIT 1972]
                 x4 1           1                                                        x4 1           1
       (a)          x sin 2 x  cos 2 x  c                                       (b)      x sin 2 x  cos 2 x  c
                 4  4           8                                                        4  4           8
                 x4 1           1                                                        x4 1           1
       (c)          x sin 2 x  cos 2 x  c                                       (d)      x sin 2 x  cos 2 x  c
                 4  4           8                                                        4  4           8
             d
178. If        f (x )  x cos x  sin x and f (0)  2, then f (x )                                                                           [MP PET 1989]
            dx
       (a) x sin x                                (b) x cos x  sin x  2          (c) x sin x  2                     (d) x cos x  2
                         x 
       e
             x/2
179.                  sin   dx                                                                                                        [Roorkee 1982]
                         2 4
                                 x                                       x                           x                                        x
       (a) e x / 2 cos             c             (b)    2 e x / 2 cos     c      (c) e x / 2 sin     c              (d)    2 e x / 2 sin     c
                                 2                                       2                           2                                        2
        x sin
                   2
180.                      x dx                                                                                          [Ranchi BIT 1977; IIT 1972]
                 x2 x         1                                                          x2 x         1
       (a)          sin 2 x  cos 2 x  c                                         (b)      sin 2 x  cos 2 x  c
                 4  4         8                                                          4  4         8
                 x2 x         1                                                          x2 x         1
       (c)          sin 2 x  cos 2 x  c                                         (d)      sin 2 x  cos 2 x  c
                 4  4         8                                                          4  4         8
          x  sin x
181.
        1  cos x dx =                                                                                                                        [AISSE 1989]
                            x                                   x                            x
       (a) x cot              c                  (b)  x cot     c               (c) cot     c                      (d) None of these
                            2                                   2                            2
       x
             2
182.             sin 2 x dx                                                                                                                         [IIT 1974]
                 1 2          1           1                                                1 2          1           1
       (a)         x cos 2 x  x sin 2 x  cos 2 x  c                             (b)      x cos 2 x  x sin 2 x  cos 2 x  c
                 2            2           4                                                2            2           4
                 1 2          1           1
       (c)         x cos 2 x  x sin 2 x  cos 2 x  c                             (d) None of these
                 2            2           4
183.
        log x dx                                                                                          [MNR 1979; Ranchi BIT 1992; SCRA 1996]
                                                                                                                             1
       (a) x  x log x  c                        (b) x log x  x  c              (c) x 2 log x  c                   (d)     log x  x  c
                                                                                                                             x
184.
        log     10    x dx                                                                                                              [Roorkee 1973]
       (a) x log 10 x  c                         (b) x(log 10 x  log 10 e)  c   (c) log 10 x  c                    (d) x(log 10 x  log 10 e)  c
                 log x
185.
        (1  log x )        2
                                 dx 
                     1                                        x                               x                                    1
       (a)                 c                     (b)                 c           (c)             c                  (d)                 c
                 1  log x                              (1  log x )2                    1  log x                           (1  log x )2
           1                    1       
186.
         log x  (log x )         2    dx 
                                         
                   1                                      x                                  x
       (a)             c                         (b)         c                   (c)                                 (d) None of these
                 log x                                  log x                            (log x )2
304 Indefinite Integral
       e
             2x
187.              sin 3 x dx                                                                                                                          [Pb. CET 1994]
                  e 2x                                                                           e 2x
       (a)             (2 sin 3 x  3 cos 3 x )  c                                        (b)        (2 sin 3 x  3 cos 3 x )  c
                  13                                                                             13
                  e 2x                                                                           e 2x
       (c)             (2 cos 3 x  3 sin 3 x )  c                                        (d)        (2 cos 3 x  3 sin 3 x )  c
                  13                                                                             13
                  
188. If I  e x sin 2 x dx , then for what value of K , KI  e x (sin 2 x  2 cos 2 x )  const.                                                       [MP PET 1992]
189. If
            g(x )dx  g(x ), then  g(x){f(x)  f '(x)}dx                 is equal to
191.
        log( x  1)dx                                                                                                                                [Roorkee 1974]
                                                              1                                      x
       (a) log log x e  c                          (b)               c                   (c) x log    c                         (d) None of these
                                                          (log x e )2                                e
        (log x ) dx 
                        2
193.                                                                                                                                                     [IIT 1971, 77]
194.
        x log xdx                                                                                                                                    [MP PET 1987]
                  x2         x2                           x2         x2                          x2         x2
       (a)           log x     c                  (b)      log x     c                 (c)      log x     c                    (d) None of these
                  2          2                            2          4                           2          2
            ln (x
                         2
195. If                       x )dx  x ln (x 2  x )  A, then A                                                                                    [MP PET 1992]
                                     log x
196. The value of
                                  (x  1)   2
                                                 dx is                                                                                                 [UPSEAT 1999]
                   log x                                                                        log x
       (a)                 log x  log( x  1)                                            (b)          log x  log( x  1)
                   x 1                                                                           x 1
                  log x                                                                           log x
       (c)               log x  log( x  1)                                              (d)            log x  log( x  1)
                   x 1                                                                           x 1
        tan
                   1
197.                    xdx                                                                                                                           [Roorkee 1977]
                                  1                               1
       (a) x tan 1 x              log(1  x 2 ) (b) x tan 1 x  log(1  x 2             (c) (x  1) tan 1 x                      (d) x tan 1 x  log(1  x 2 )
                                  2                               2
                                                                                                                     Indefinite Integral 305
         x tan
                      1
198.                       xdx                                                                                                        [Roorkee 1979]
                 1 2                 1                                               1 2                 1
       (a)         (x  1) tan 1 x  x  c                                   (b)      (x  1) tan 1 x  x  c
                 2                   2                                               2                   2
                 1 2                 1                                               1 2
       (c)         (x  1) tan 1 x  x  c                                   (d)      (x  1) tan 1 x  x  c
                 2                   2                                               2
        e
             x
201.             sin x (sin x  2 cos x )dx                                                                                            [MP PET 1988]
                   ex                                     ex                         ex                                     ex
       (a)           c                           (b)       c               (c)       c                          (d)       c
                   x2                                     x2                         x                                      x
         e [ f (x )  f ' (x )]dx
             x
203.                                   is equal to                                                                                           [DCE 2002]
                x                                         x2                      x 2                            2 xe x 
       (a) e x     C                            (b) e x      C          (c) e x      C                     (d)        C
                                                                                                                                 
               x 4                                      x 4                     x 4                              x 4 
            x 1
205.
        (x  1)   3
                       e x dx                                                                                             [IIT 1983; MP PET 1990]
                  ex                                        ex                         ex                                  ex
       (a)                 2
                               c                  (b)             2
                                                                       c     (c)             3
                                                                                                  c                (d)              c
                 (x  1)                                 (x  1)                    (x  1)                               (x  1)3
              xe x
206.
         (1  x ) dx 2
                                                                                             [MP PET 1997; UPSEAT 2001; Rajasthan PET 2002]
                 e x                                      e x                      ex                                      ex
       (a)            C                           (b)         c            (c)        c                         (d)         c
                 1 x                                      1 x                     1 x                                    1 x
                 (x 2  1)
207.
           ex
                 (x  1)2
                           dx 
            x 1  x                                       x 1 
       (a)       e c                            (b) e x       c         (c) e x (x  1)(x  1)  c            (d) None of these
            x 1                                          x 1 
                                e
                                     2x
208. The value of                         (2 sin 3 x  3 cos 3 x )dx is                                                                 [MP PET 2003]
                             x                                             x
       (a)         e x . tan    C                           (b) e x . cot    C                       (c)   e x . tan x  C                       (d) e x . cot x  C
                             2                                             2
        (1  x  x
                                            1
                                1
211.                                 )e x  x dx                                                                                                                                 [EAMCET 2003]
                                      1                                             1                                       1                                        1
       (a)     (x  1)e x  x              C                  (b) (x  1)e x  x         C               (c)    xe x  x        C                  (d)   xe x  x        C
       e
              x
212.                (1  tan x ) sec xdx is equal to
                                                                                                                 1                                           1
       (a)  (x )  e x f (x )                                 (b)  (x )  e x f (x )                     (c)     { (x )  e x f (x )}               (d)     { (x )  e x f ' (x )}
                                                                                                                 2                                           2
214.   If
              f (x )dx  g(x ), then                    f 1 (x )dx is equal to                                                                                                  [MP PET 2003]
215.
        sin           x dx                                                                                                                                                       [Roorkee 1977]
(a) 2[sin x  cos x ]  c (b) 2[sin x  x cos x ] c (c) 2[sin x  cos x ]  c (d) 2[sin x  x cos x ] c
216.
        cos           x dx                                                                                                               [BIT Ranchi 1990; IIT 1997; Rajasthan PET 1999]
(a) 2 [ x sin x  cos x ]  c (b) 2[ x sin x  cos x ]  c (c) 2[cos x  x sin x ]  c (d)  2[ x sin x  cos x ] c
             x sin 1 x
217.
                  1  x2
                                dx                                                                                                                  [MNR 1978; EAMCET 1982; IIT 1984]
Advance Level
219.
        [sin(log x)  cos(log x )]dx                                                                                                                                             [MP PET 1991]
                                     cos   sin  
220.
          cos 2 log cos   sin   d                                                                                                                                          [IIT 1994]
                                             1         
221.
        log(log x )  (log x ) dx             2
                                                     x                                         x                                             log x                               log x
        (a)        x log(log x )                        c          (b)   x log(log x )          c            (c)     x log(log x )            c    (d)   x log(log x )          c
                                                   log x                                     log x                                             x                                   x
0 x 2  sin x cos x  2
                                                                                                 f (x )dx is equal to
                                               2
222.    If f (x )  sin x  x                                0             1  2x      , then
                    2  cos x                               2x  1             0
                   x3                                                      x3                                            x3
        (a)            x 2 sin x  sin 2 x                          (b)       x 2 sin x  cos 2 x              (c)         x 2 cos x  cos 2 x        (d) Constant
                   3                                                       3                                             3
                                        2 sin x  sin 2 x
223.    If integral of                                    ( x  0 ) is g(x ), then lim g' (x ) will be equal to
                                               x3                                  x 0
                                        e
                                              sec x
224.    The value of                                  . sec 3 x (sin 2 x  cos x  sin x  sin x cos x )dx is
                  tan 1 x       x 
225.
         e               1 
                          
                                      dx is equal to
                               1  x2 
                               1                                          1       1                                            1                            1 tan 1 x
        (a)        x .e tan         x
                                                                     (b)     xe tan x                            (c)     e tan        x
                                                                                                                                                         (d)     e
                                                                           2                                                                                   2
226.
          sin 2 x. log cos xdx                         is equal to
                           1            
        (a)        cos 2 x   log cos x   k                                                                   (b) cos 2 x . log x  k
                           2            
                           1            
        (c)        cos 2 x   log cos x   k                                                                   (d) None of these
                           2            
                                1  x2                                              1 x2                                                 1 x2                           1  x2
        (a)  (x )                                                  (b)  (x )                                 (c)  (x )                            (d)  (x )  
                                   2                                                  2                                                     2                                2
                   x tan 1 x
228.    If
                      1  x2
                                         dx  1  x 2 f (x )  A log( x  x 2  1)  c , then
                                            1                                                                                         3
                      1    1 2        1  2                                                                     1    1 2        1  2
        (a)            1  2  log 1  2     c                                                         (b)    1  2  log 1  2     c
                      3   x          x  3                                                                      3   x          x  3
                                            3
                      2    1 2        1  2
        (c)            1  2  log 1  2     c                                                         (d) None of these
                      3   x          x  3
                                        1
                  x log(1  x )dx  f (x ). log( x  1)  g(x ).x
                                                                                       2
230.    If                                                                                  Ax  c , then
                                    1 2
        (a)           f (x )         x                            (b)       g(x )  log x                    (c)   A 1                                     (d) None of these
                                    2
                          xe x
231.    If
                         1e       x
                                        dx  f (x ) 1  e x  2 log g(x )  c , then
                                                                                       1  ex 1                                  1 ex 1
        (a)           f (x )  x  1                               (b)       g(x )                           (c)   g(x )                                   (d)      f (x )  2(x  2)
                                                                                       1  ex 1                                  1  ex 1
                     sin 1 x
232.
                               3
                                    dx                                                                                                                                              [AISSE 1983, 87]
                 (1  x 2 ) 2
                            x                         1                                                                  x                      1
        (a)                              sin 1 x      log(1  x 2 )  c                                     (b)                  sin 1 x      log(1  x 2 )  c
                          (1  x )  2                 2                                                               (1  x )2                 2
                            1                         1                                                                  1                      1
        (c)                              sin 1 x      log(1  x 2 )  c                                     (d)                  sin 1 x      log(1  x 2 )  c
                          (1  x )  2                 2                                                               (1  x )2                 2
                      1                                                                                             1 2
                                                 F(x ) d (x )                                                                          
        (a)                x 2 F(x 2 )              2           2                                          (b)        x F(x 2 )  F(x 2 ) dx 
                      2                                                                                           2                          
                      1 2           1                            
                                                  F(x ) dx 
                                                          2
        (c)                x F(x )                                                                           (d) None of these
                      2            2
Basic Level
                        dx
234.
                 x 2  4 x  13
                                 is equal to                                                                                                                                      [Kerala CET 2002]
                                                                             1        x  2                                                                              2x  4
        (a)          log( x 2  4 x  13 )  c                     (b)         tan 1      c               (c)   log( 2 x  4 )  c                       (d)                         c
                                                                             3         3                                                                            (x 2  4 x  13 )2
                   dx
235.
       x    2
                  8 x  20
                                                                                                                                                                                     [Pb. CET 1996]
                        dx
236.
           1 x  x         2
                                 
                     1         5  1  2x                                                            1       5 1  2x 
          (a)             log                c                                             (b)         log                c
                        5      5  1  2 x                                                          5      5  1  2 x 
                         1      5  1  2x                                                           1       5  1  2x 
          (c)             log                c                                            (d)        log                c
                         5      5  1  2 x                                                         5      5  1  2 x 
                                       dx
237.      The value of
                                  3  2x  x   2
                                                     will be                                                                                                         [UPSEAT 1999]
                    2x  3
238. If
          x    2
                     5x  6
                             dx  9 ln(x  3)  7 ln( x  2)  A, then A 
(a) 5 ln( x  2)  constant (b) 4 ln(x  3)  constant (c) Constant (d) None of these
                x dx
239.
       x   2
                 4x 5
                                                                                                                                                             [Rajasthan PET 2002]
                    1                                                                                 1
          (a)         log (x 2  4 x  5)  2 tan 1 x  c                                    (b)       log( x 2  4 x  5)  tan 1 (x  2)  c
                    2                                                                                 2
                    1                                                                                 1
          (c)         log( x 2  4 x  5)  tan 1 (x  2)  c                                (d)       log( x 2  4 x  5)  2 tan 1 (x  2)  c
                    2                                                                                 2
                     2x  3
240.
          x    2
                      3 x  18
                                dx 
                                                    2     x 3                                                                2     x 3
          (a)       log | x 2  3 x  18 |           log      c                             (b) log | x 2  3 x  18 |       log      c
                                                    3     x 6                                                                3     x 6
                                                     2     x 3                                                                    2     x 3
          (c)        log | x 2  3 x  18 |          log      c                            (d)      log | x 2  3 x  18 |      log      c
                                                     3     x 6                                                                    3     x 6
241.
                   x 2  8 x  7 dx 
                    1                                                                                 1
          (a)         (x  4 ) x 2  8 x  7  9 log[ x  4  x 2  8 x  7 ]  c             (b)       (x  4 ) x 2  8 x  7  3 2 log[ x  4  x 2  8 x  7 ]  c
                    2                                                                                 2
                    1                         9
          (c)         (x  4 ) x 2  8 x  7  log[ x  4                 x2  8x  7]  c   (d) None of these
                    2                         2
                        dx
242.
                   2x  x 2
                                                                                                                                       [MP PET 1991; Karnataka CET 2002]
                x4  x2 1
243.
               x2  x 1
                           dx 
                    1 3 1 2                                    1 3 1 2                                1 3 1 2
          (a)         x  x  x c                      (b)      x  x  x c                 (c)       x  x x c                      (d) None of these
                    3    2                                     3    2                                 3    2
310 Indefinite Integral
                          dx
244.
            x [(log x )2  4 log x  1]
                                         
                   1       log x  2  5                                                           1         log x  2  5 
       (a)            log                  c                                               (b)         log                  c
                  2 5      log x  2  5                                                            5      log x  2  5 
                   1       log x  2  5                                                           1         log x  2  5 
       (c)            log                  c                                               (d)         log                  c
                  2 5      log x  2  5                                                            5      log x  2  5 
                 dx
245.
            7  5 cos x
                                                                                                                                                           [EAMCET 2002]
                  1              1     x                                                           1               1     x
       (a)              tan 1     tan   c                                               (b)           tan 1     tan   c
                   6              6    2                                                              3             3    2 
                  1            x                                                                  1            x
       (c)          tan 1  tan   c                                                        (d)     tan 1  tan   c
                  4            2                                                                  7            2
                          dx
246.
            sin x  3 cos x
                                             
                      x                                  1         x                                  x                               1         x 
       (a)    log tan     c                       (b)     log tan     c               (c)   log cot     c                    (d)     log cot     c
                      2 2                                 2         2 6                                 2 6                              2         2 6
                          dx
247.
        1  sin x  cos x                                                                                                                                  [Pb. CET 1992]
                                    x                                       x                                        x
       (a)    log 1  tan             c              (b)    log 1  tan     c              (c)   log 1  tan        c                (d) None of these
                                    2                                       2                                        2
                          dx
248.
        sin x  cos x                  2
                                             equals                                                                                                          [MP PET 2002]
                      1       x                           1      x                             1        x                                 1     x 
       (a)               tan     c               (b)       tan     c                 (c)         cot     c                  (d)        cot     c
                        2     2 8                           2     2 8                               2     2 8                                2     2 8
                          dx
249.
        1  2 sin x  cos x                                                                                                                          [Rajasthan PET 1991]
                                                                                                    1
       (a)    log[1  2 tan( x / 2)]  c              (c)   log[1  2 tan( x / 2)]  c        (c)     log[ 1  2 tan( x / 2)]  c        (d) None of these
                                                                                                    2
               c 2 sin 2 x
250.
            a  b 2 sin 2 x
              2
                             dx 
               c2                                           c2                                      b2
       (a)        log( a 2  b 2 sin 2 x )  k (b)             log( a 2  b 2 sin 2 x )  k   (c)      log( a 2  b 2 sin 2 x )  k      (d) None of these
               b2                                           a2                                      c2
                   1
251.
        1  sin          2
                              x
                                  dx 
                  1                                                                                         1
       (a)              tan 1 ( 2 tan x )  k        (b)    2 tan 1 ( 2 tan x )  k         (c)              tan 1 ( 2 tan x )  k   (d)    2 tan 1 ( 2 tan x )  k
                   2                                                                                        2
                    1
252.
        1  cos          2
                              x
                                  dx 
                  1                                          1         1                           1             1        
       (a)              tan 1 (tan x )  c           (b)       tan 1  tan x   c          (c)         tan 1    tan x   c       (d) None of these
                   2                                          2         2                             2          2        
                                                                                                                                            Indefinite Integral 311
                        dx
253.
        (a sin x  b cos x )         2
                                          
                     1                                             1                                   1                                      1
       (a)                    c                     (b)                    c             (c)                 c                    (d)               c
               a(a tan x  b)                                a(a tan x  b)                        a tan x  b                             a tan x  b
             2 sin x  3 cos x
254.
            4 sin x  5 cos x
                               dx
                2                         23                                                       1                    1
       (a)        log 5 cos x  4 sin x     x c                                          (b)       log sin x  cos x  x  c
               41                         41                                                       2                    2
                2                          3                                                       1                    1
       (c)        log 2 sin x  3 cos x     x c                                          (d)       log sin x  cos x  x  c
               13                         13                                                       2                    2
                dx
255.
        1  tan x                                                                                                                                   [Pb. CET 1991, 93]
               1    1                                                                              1    1
       (a)       x  log cos x  sin x  c                                                 (b)       x  log cos x  sin x  c
               2    2                                                                              2    2
               1    1
       (c)       x  log cos x  sin x  c                                                 (d) None of these
               2    2
                  dx
256.
            cos x  sin x
                           is equal to                                                                                                                      [AIEEE 2004]
                1               x 3                        1          x                        1               x 3                  1         x 
       (a)             log tan        c (b)                  log cot    c           (c)             log tan       c       (d)      log tan     c
                   2           2   8                         2         2                           2           2   8                  2         2 8
             3 sin x  2 cos x
257.
            3 cos x  2 sin x
                               dx 
               12     5                                                                            12     5
       (a)        x    log( 3 cos x  2 sin x )                                           (b)        x    log( 3 cos x  2 sin x
               13    13                                                                            13    13
               13     5
       (c)        x    log( 3 cos x  2 sin x                                             (d) None of these
               12    13
                   6x  7
258.
             (x  5)(x  4 )
                                     dx 
                                                           9                                                                     9
       (a)    6 x 2  9 x  20  34 log x                    x 2  9 x  20  c          (b) 6 x 2  9 x  20  34 log x         x 2  9 x  20  c
                                                           2                                                                     2
                                                           9                                                                         9
       (c)    6 x 2  9 x  20  34 log x                    x 2  9 x  20  c          (d) 6 x 2  9 x  20  34 log x               x 2  9 x  20  c
                                                           2                                                                         2
Advance Level
                                 2x  3
259.   The integral
                           (x   2
                                   x  1)2
                                            dx is equal to
                      8x  7     16          2x  1                                                      1     4
       (a)                        tan 1         c                                   (b)                  tan 1 (4 x  3)  c
                                                 3 
                      2
                   3(x  x  1) 3 3                                                                   x2  x 1 3
                     1          (2 x  1)2                                                             1        2
       (c)                                  c                                            (d)                  tan 1 (2 x  1)  c
               2(x 2  x  1) (x 2  x  1)2                                                               2
                                                                                                   4(x  x  1) 3
                                                  1  x2
260.   The value of the integral
                                                 1  x4
                                                         dx is equal to
312 Indefinite Integral
                                                             1           x2 1                        1      x2  2x 1 
       (a)       tan 1 x 2  c                       (b)       tan 1        
                                                                                             (c)         log  2          c          (d) None of these
                                                              2                                                x  2x 1 
                                                                         2x                         2 2                 
                           x2
261.
            ( x 2  3 x  3) x  1
                                           dx is equal to
                  1              x                         2              x                        2           x 
       (a)           tan 1                         (b)       tan 1                      (c)         tan 1       
                                                                                                                                       (d) None of these
                   3         3 ( x  1)                     3         3 ( x  1)                    3          x 1 
                                                                                 
                          dx
262.
        (1  x ) 1  x2          2
                                                                                                                                                                    [MNR 1985]
                  1          1  x2                        1          x 2                                     1  x2                                1  x2 
       (a)           tan 1         c              (b)       tan 1             c       (c)       2 tan 1         c           (d)    2 tan 1         c
                   2         x 2                            2         1  x
                                                                                2
                                                                                                                x 2                                   x 2 
                                                                                                                                                             
Basic Level
                                                  x
263.   Correct evaluation of
                                           (x  2)(x  1) dx      is                                                                                          [MP PET 1993]
                           (x  2)2                               (x  1)                             x 1                                              (x  2)
       (a)       log e              p                (b) log e           p                  (c)          p                           (d)   2 log e           p
                            (x  1)                               (x  2)                             x 2                                              (x  1)
       (where p is an aribitrary constant)
                      dx
264.
        (x  1)(x  2)                                                                                                                                       [MP PET 1987]
                       (x  2)                                                                              (x  1)
       (a)       log           c                     (b) log( x  1)  log( x  2)  c       (c)     log           c                  (d) None of these
                       (x  1)                                                                              (x  2)
                 dx
265.
        1 x         2
                                                                                                                                                     [MP PET 1987, 92, 2000]
                                                                                                      1     1 x                              1     1x
       (a)       tan 1 x  c                         (b)   sin 1 x  c                      (c)       log      c                     (d)     log      c
                                                                                                      2     1x                               2     1 x
                      x 1
266.
        (x  3)(x  2) dx                                                                                                                                    [Roorkee 1978]
(a) log( x  3)  log( x  2)  c (b) log( x  3)2  log( x  2)  c (c) log( x  3)  log( x  2)  c (d) log( x  3)2  log( x  2)  c
               1
267.
            x  x3
                    dx                                                                                                                                        [MP PET 1996]
                 1     (1  x 2 )                                 (1  x )                                                                    1        x2
       (a)         log            c                  (b) log                c               (c)     log x (1  x 2 )  c              (d)     log            c
                 2        x2                                      x (1  x )                                                                  2     (1  x 2 )
                           1                       1
268.   If
                (sin x  4 )(sin x  1)
                                         dx  A
                                                   x
                                                tan  1
                                                         B tan 1 f (x )  c , then
                                                                                                                                            x
                                                                                                                                      4 tan    1
                   1      2             4 tan x  3                                                     1     1                            2
       (a)       A , B      , f (x )                                                       (b)     A , B    , f (x ) 
                   5     5 15                 15                                                         5     15                            15
                                                                                                                                                      Indefinite Integral 313
                                                                                                                                              x
                                                                                                                                         4 tan  1
                    2     2            4 tan x  1                                                    2      2                              2
        (c)       A , B    , f (x )                                                         (d)   A , B      , f (x ) 
                    5     5                  5                                                         5     5 15                            15
                                              dx
269.
          (sin x  2 cos x )(2 sin x  cos x ) 
                  1      tan x  2                                      1      tan x  2                      tan x  2                                     tan x  2
        (a)         log             c                        (b)        log             c   (c)   log                 c                 (d)    log                c
                  5     1  2 tan x                                     5     1  2 tan x                    1  2 tan x                                   1  2 tan x
                      dx
270.
        (x  1) (x  2) 
                      2
                                                                                                                                                                [CBSE PMT 1994]
                           x 2   1                                         x 1    1                        x 2   1                                     x 1    1
        (a) log                     c                       (b) log                 c      (c) log                c                   (d) log                 c
                           x 1 x 1                                        x  2 x 1                       x 1 x 1                                    x  2 x 1
                  x 1
271.
          (x  1)         2
                               dx 
                                                2                                    2                 2
        (a)       log( x  1)                     c         (b) log( x  1)          c     (c)         log( x  1)  c                 (d) None of these
                                              x 1                                 x 1              x 1
                   2x
272.
          (2 x  1)           2
                                       dx                                                                                                                             [DSSE 1985]
                  1                     1                                                            1                     1
        (a)         log( 2 x  1)             c                                              (b)     log( 2 x  1)             c
                  2                 2(2 x  1)                                                       2                 2(2 x  1)
                                                       1                                                                     1
        (c)       2 log( 2 x  1)                            c                               (d)   2 log( 2 x  1)               c
                                                   2(2 x  1)                                                            2(2 x  1)
                  dx
273.
          (x  x )       2
                                                                                                                                                                     [Roorkee 1982]
(a) log x  log(1  x )  c (b) log(1  x )2  c (c)  log x  log(1  x )  c (d) log( x  x 2 )  c
                                     x2
274.    Value of
                                  x  a2
                                        2
                                          dx                                                                                                                          [MNR 1997]
                           1
275.
          (x  1)(x               2
                                        1)
                                              dx                                                                                                                    [Roorkee 1984]
                  1              1               1                                                   1              1               1
        (a)         log( x  1)  log( x 2  1)  tan 1 x  c                                 (b)     log( x  1)  log( x 2  1)  tan 1 x  c
                  2              4               2                                                   2              4               2
                  1              1               1
        (c)         log( x  1)  log( x 2  1)  tan 1 x  c                                 (d) None of these
                  2              2               2
                      2x  3                
                                            
                                                      5             1
                                                      2 (x 2  1)a  
276.    If
                          2
                  (x  1)(x  1)
                                 dx  log e 
                                            
                                            
                                             ( x  1)              
                                                                   
                                                                   
                                                                       2
                                                                         tan 1 x  A, Where A is any arbitrary constant, then the value of ‘a’ is
                  1           1      x                                                               1           1      x
        (a)         tan 1 x  tan 1  c                                                      (b)     tan 1 x  tan 1  c
                  3           3      2                                                               3           3      2
314 Indefinite Integral
                 1           1      x                                                                                x
       (c)         tan 1 x  tan 1  c                                                 (d)   tan 1 x  2 tan 1     c
                 3           6      2                                                                                2
                     x2
278.
            (x 2  2)(x 2  3)
                                dx                                                                                                                             [AISSE 1990]
                                                                                                               x                     x
       (a)        2 tan 1 x  3 tan 1 x  c                                           (b)    2 tan 1            3 tan 1           c
                                                                                                                2                    3
                                   x                       x
       (c)            2 tan 1              3 tan 1           c                       (d) None of these
                                   2                       3
                            1
279.
        (x       2
                       a 2 )(x 2  b 2 )
                                          dx 
                      1       1   1  x  1 1  x                                              1       1   1  x  1 1  x 
       (a)                     tan    tan    c                                   (b)                 tan    tan    c
                 (a 2  b 2 )  b     b a       a                                         (b 2  a 2 )  b     b a       a 
                    1           x 2  a2                                                        1          x 2  b2   
       (a)            22
                          log  2        c
                                        2 
                                                                                         (b)        22
                                                                                                       log  2      2
                                                                                                                         c
                                                                                                                         
                 (a  b )      x b                                                           a b         x a       
                       1             x 2  a2                                                      1             x 2  b2   
       (c)                      log                     c                             (d)                  log             c
                  2(a 2  b 2 )      x 2  b2                                                 2(a 2  b 2 )      x 2  a2   
                                                                                                                            
                   (2 x 2  1)dx             x  1 a  x  2 
281.   If
                (x 2  4 ) (x 2  1)
                                       log                   c, then the values of a and b are respectively
                                             x  1   x  2 
                                                                                                                                                            [Roorkee 2000]
                 1 3                                                    3                           3                                          1 3
       (a)        ,                                       (b)     1,                    (c)   1,                                        (d)     ,
                 2 4                                                    2                           2                                          2 4
                          2x 2  3                  x 1             x
282.   If
              (x     2
                           1)(x 2  4 )
                                        dx  a log 
                                                    x 2
                                                            b tan 1    c , then values of a and b are
                                                                       2
                                                                                                                                                      [Rajasthan PET 2000]
                                                                                               1  1                                        1 1
       (a)       (1,  1)                                 (b) (1, 1)                    (c)    ,                                     (d)  , 
                                                                                               2  2                                        2 2
                                       1
283.   For x  1,
                             x (x     4
                                            1)
                                                  dx                                                                                              [Rajasthan PET 1997, 89]
                          x4 1                                  1     x4 1                            x4 1                                  1     x4 1
       (a)       log            k                        (b)      log       k          (c)   log            k                         (d)     log       k
                           x4                                    4      x4                                x                                    4       x
                   dx
284.
            e x  1  2e x
                            
                                                                                                1                1
       (a)       log( e x  1)  log( e x  2)  c                                       (b)      log( e x  1)  log( e x  2)  c
                                                                                                2                3
                      1                1                                                        1                1
       (c)              log( e x  1)  log( e x  2)  c                                (d)      log( e x  1)  log( e x  2)  c
                      3                3                                                        3                3
                       x2
285.
                2
             x  6x  3
                                   dx                                                                                                                      [AICBSE 1999]
                                                                                                                                           Indefinite Integral 315
                                                    21         x 32 3                                                    21          x 32 3
       (a)       x  3 log x 2  6 x  3                log              c          (b)   x  3 log x 2  6 x  3             log                c
                                                  4 3          x 32 3                                                    4 3         x 32 3
                                                   21          x 32 3
       (c)       x  3 log x 2  6 x  3                log              c          (d) None of these
                                                  4 3          x 32 3
                      ex
286.
        (1  e )(2  e ) dx 
                     x             x
                                                             1  ex 
       (a)       log[(1  e x )(2  e x )]  c       (b) log        x 
                                                                         c           (c)   log[(1  e x ) 2  e x ]  c           (d) None of these
                                                              2  e 
Advance Level
             x3  x  2
287.
             (1  x 2 )
                         dx                                                                                                                             [AICBSE 1985]
                      x 1  x2                              x 1  x2                         x 1  x2                                 x 1  x2
       (a)       log          c                  (b) log          c           (c)   log          c                     (d) log          c
                      x 1  2                               x 1  2                          x 1  2                                  x 1  2
             x2  x 1
288.
            x2  x  6
                        dx                                                                                                                               [AISSE 1988]
                                        1              1
       (a)       log 1  x               log 1  x 2  tan 1 x  c                  (b) log 1  x  log 1  x 2  tan 1 x  c
                                        2              2
                                                      1
       (c)       log 1  x 2  log 1  x               tan 1 x  c                  (d) log 1  x  tan 1 x  log 1  x 2  c
                                                      2
             x3 1
290.
            x3  x
                    dx                                                                                                                  [Roorkee 1988, MP PET 2001]
                                   1
       (a)       x  log x          log( x 2  1)  tan 1 x  c                     (b)   x  log x  log x 2  1  tan 1 x  c
                                   2
                                             12       4                                                            12       4
       (a)       x  6 log 1  x                          c                        (b)    x  6 log 1  x                   c
                                            1  x (1  x )2                                                       1  x (1  x )2
                                             12       4
       (c)  x  6 log 1  x                              c                        (d) None of these
                                            1  x (1  x )2
                 dx
292.
            x (x 5  1)
                                                                                                                                                          [CBSE 1997]
                 1     x5                                            x5                         1     x5                                            x5
       (a)         log 5   c                        (b) 5 log      5
                                                                         c           (c)        log 5   c                       (d)    5 log   5
                                                                                                                                                        c
                 5    x 1                                          x 1                        5    x 1                                          x 1
                 4 e x  6e x
293.   If
                9e x  4 e x
                               dx  Ax  B log( 9 e 2 x  4 )  C then A, B and C are                                                                        [IIT 1990]
316 Indefinite Integral
                          3      36      3                                                           3      35      3
       (a)     A           , B    , C  log 3  constant                             (b)   A        , B    , C  log 3  constant
                          2      35      2                                                           2      36      2
                           3       35        3
       (c)     A           , B    , C   log 3  constant                         (d) None of these
                           2       36        2
                 x
294.
            4
             x 1
                          dx 
               1                   1                  2                                                                                           2
       (a)       log (1  cos x )  log (1  cos x )  log (1  2 cos x )  c          (b) 6 log(1  cos x )  2 log(1  cos x )                   log(1  2 cos x )  c
               6                   2                  3                                                                                           3
                                         1                  2
       (c)    6 log(1  cos x )           log(1  cos x )  log(1  2 cos x )  c     (d) None of these
                                         2                  3
                                 cos 3 x  cos 5 x
296.   The value of
                                sin 2 x  sin 4 x
                                                   dx is
Basic Level
        tan
                 4
297.                 x dx 
                                                        1                                    1                                                      1
       (a)    tan 3 x  tan x  x  c             (b)     tan 3 x  tan x  x  c      (c)     tan 3 x  tan x  x  c                      (d)       tan 3 x  tan x  2 x  c
                                                        3                                    3                                                      3
                             sec
                                    3
298.   The value of                     x dx will be                                                                                                                 [UPSEAT 1999]
               1                                                                             1
       (a)       [sec x tan x  log(sec x  tan x )]                                   (b)     [sec x tan x  log(sec x  tan x )]
               2                                                                             3
               1                                                                             1
       (c)       [sec x tan x  log(sec x  tan x )]                                   (d)     [sec x tan x  log(sec x  tan x )]
               4                                                                             8
        sec
               2/3
299.                  x . cosec 4 / 3 x dx 
(a)  3(tan x )1 / 3  c (b)  3(tan x )1 / 3  c (c) 3(tan x )1 / 3  c (d) (tan x )1 / 3  c
        sin
                 4
300.                 x cos 3 x dx =                                                                                                                                     [CBSE 1985]
               1          1                             1          1                             1          1
       (a)       sin 5 x  sin7 x  c             (b)     sin 5 x  sin7 x  c         (c)        sin 5 x  sin7 x  c                     (d) None of these
               5          7                             5          7                             5          7
        sin
                 3
301.                 xdx is equal to                                                                                                                                    [SCRA 1996]
                                                                                   cos 3 x                               1          3
       (a)    sin 2 x  1                         (b)   sin x 2  x 2  1              (c)   cos x                 (d)    sin 4 x  sin 2 x
                                                                                       3                                 4          4
302.   Which value of constant not integration makes the value of integral of sin 3 x. cos 5 x equal to zero at x  0                  [Roorkee 1971]
       (a) 0                           (b) –3/16                             (c) –5/6                               (d) 1/8
303.
        sin 2 x. sin 3 x dx        equals                                                                                                                      [Rajasthan PET 1989]
                                                                                                                                                 Indefinite Integral 317
                 (sin x  sin 5 x )                      (sin x  sin 5 x )                        (5 sin x  sin 5 x )
       (a)                          c             (b)                      c              (c)                         c             (d) None of these.
                         2                                      10                                         10
304.
        cos 2 x. sin 4 xdx          equals
                 sin 5 x
305.
            cos 7 x . cos 2 x
                               dx is equal to
(a) log sec 7 x  c (b) log sec 7 x . sec 2 x  c (c) log sec 7 x  sec 2 x  c (d) None of these
        cos
                  5
306.                  x dx 
                            2          1                                                                     2          1
       (a)       sin x       sin 3 x  sin 5 x  c                                         (b)    sin x      sin 3 x  sin 5 x  c
                            3          5                                                                     3          5
                            2          1
       (c)       sin x       sin 3 x  sin 5 x  c                                         (d) None of these
                            3          5
Advance Level
                                            1                         
                        cot
                               4
307.   If f (x )                  xdx       cot 3 x  cot x and f     then f (x ) 
                                            3                       2 2
                 
       (a)            x                           (b)   x                                (c)     x                                (d)   x
                 2
Basic Level
                     dx
308.
        1  cosh x 
                      x                                     x                                  1      x
       (a)       cot h   c                      (b)   tan h   c                       (c)      tan h   c                      (d) None of these
                      2                                     2                                  2      2
                       dx
309.
            x (log x )2  3
                                     is equal to
                                x                                  x                                        x 
       (a)       sin h 1  log       c          (b) cos h 1  log       c             (c)    cos h 1  log       c            (d) None of these
                                 3                                  3                                        2 
             (e x  e  x )2
310.
            (e x  e  x )2
                             dx is equal to
             1        x 1
311.
            x        x 1
                           dx equals
       (a)       cos h 1 x  sec 1 x  c         (b)   sin h 1 x  sec 1 x  c          (c)    cos h 1 x  sec 1 x  c           (d)   sin h 1 x  sec 1 x  c
318 Indefinite Integral
312.
                sec x  1dx is equal to
                                    x                             x                                                     x 
       (a)       2 sin h 1  2 cos    c (b)  2 sin h 1  2 cos    c                      (c)     2 cos h 1  2 cos    c            (d) None of these
                                     2
                                                                   2                                                     2 
       e
                 x
313.                 (sin h x  cos hx ) dx is equal to                                                                                                           [Karnataka CET 1993]
Basic Level
                 x5 / 2
314.
                1  x7
                                dx is
                     2                                          1    x7  1
       (a)             log( x 7 / 2  x 7  1 )  c (b)           log 7     c                      (c)    2 1  x7  c                             (d) None of these
                     7                                          2    x 1
                             dx
315.
            x   1/5
                          (1  x 4 / 5 )1 / 2
                                              is
                                                                5
       (a)               1  x4 / 5  k                   (b)     1  x4 /5  k                     (c)    x 4 / 5 (1  x 4 / 5 )1 / 2  k          (d) None of these
                                                                2
                     2            1        5
                                     
316.
            x       3   (1  x 2 )        3   dx is equal to
(a) 3(1  x 1 / 2 ) 1 / 3  c (b) 3(1  x 1 / 2 )2 / 3  c (c) 3(1  x 1 / 2 )2 / 3  c (d) None of these
                                      (x  x 3 )1 / 3
317.   The value of
                                         x4
                                                      dx is
                                       4                                           4                                        4
                     3    1    3                                  3    1    3                          1       1 3
       (a)                2  1  c                     (b)           2  1  c                (c)        1  2   1                         (d) None of these
                     8    x                                       8    x                               8      x  
             (x 4  x )1 / 4
318.
                 x5
                             dx is equal to
                                           5                                   5                                             5
                      4        1 4                            4       1 4                               4          1 4
       (a)                 1  3   c                   (b)       1  3   c                    (c)            1  3   c                     (d) None of these
                     15       x                               5      x                                 15         x  
                            1                          1  x2 1
319.   If
                    x 1  x3
                                      dx  a log
                                                       1  x2 1
                                                                     b, then a is equal to
                     1                                          2                                              1                                              2
       (a)                                                (b)                                       (c)                                            (d)   
                     3                                          3                                              3                                              3
                                                                                             Advance Level
                                                                                                                                                               Indefinite Integral 319
                             1
320.
        [(x  1) (x  2) ]
                        3                5 1/4
                                                    dx is equal to
                                     1                                              1                                              1                                     1
               4  x 1 4                                           4  x  2 4                                   1  x 1 4                              1  x  2 4
       (a)              c                                 (b)               c                           (c)            c                      (d)             c
               3 x 2                                              3  x 1                                      3 x 2                                 3  x 1 
                        1
321.
        (1  x ) 1  x
                    2                    2
                                             dx is equal to
               1           2x                                       1            2x                              1            2x              
       (a)       tan 1                                    (b)         tan 1                             (c)       tan 1                       (d) None of these
               2         1  x2                                      2         1  x2                             2         1  x2            
                                                                                                                                              
                                                  x 2 dx
322.   Let f (x ) 
                                (1  x 2 )(1  1  x 2 )
                                                                   and f (0 )  0, then f (1) is
                                                                                                                                          
       (a)     log(1  2 )                                   (b) log(1  2 )                                 (c)   log(1  2 )                       (d) None of these
                                                                                            4                                              4
                     x1/2                         2
323.   Let
                   1x          3
                                     dx 
                                                  3
                                                    gof (x )  c , then
                   dx
324.
              xx x
                                     is equal to
                    x4 1
325.
            x2 x4  x2 1
                                              dx 
                            1                                          x4  x2  1                                    x4  x2  1
       (a)         x2         1                            (b)                                              (c)                                      (d) Both a and b
                            x2                                             x                                               x
                      dx
326.
            (x   ) (x   )6 / 7
                        8 /7
                                    
                                              1                                                 1                                              1                                1
                 6  x   6                                        6         x         6                       7        x         7                  7  x   7
       (a)                                                 (b)                                          (c)                                  (d)               
                   x                                                 x                                       x                              x  
                       xdx
327.
        (x    2
                    1) (x 2  2)6 / 5
                        4 /5
                                       
                                         1                                                  1                                          1
                                                                                        
               2    x 2  2 5                                      5  x 2  2         5                       5  x 2  1  5
       (a)                                                 (b)                                              (c)                                      (d) Both (b) and (c)
               5    x2 1 
                                                                   2  x 2  1                                 2  x 2  2 
                                                                                                        ***
320 Indefinite Integral
 1     2        3   4      5    6      7    8     9     10    11    12    13    14    15    16    17    18    19    20
 d     b        a    b     b     c     b     c     c    b     a      c     c     c     a     a     a     a    d      a
 21   22    23      24    25    26    27    28    29    30    31    32    33    34    35    36    37    38    39    40
 b     b        b    a     c     a    d      c    d     d     d      a    a      b    d      b    d      a    b     d
 41   42    43      44    45    46    47    48    49    50    51    52    53    54    55    56    57    58    59    60
 a     b        a    a     c     a     c    d     a      c     c     b     c     a    d     d      b     a     c     b
 61   62    63      64    65    66    67    68    69    70    71    72    73    74    75    76    77    78    79    80
 c     a        b    c     b     c     a     b    b,c   b      c     c     c     a     c     a     b    d     a      a
 81   82    83      84    85    86    87    88    89    90    91    92    93    94    95    96    97    98    99    100
 b     c        c    c     b     a    d      b    d     b      c     c    a      a     b     a     b     a    b      c
101   102   103     104   105   106   107   108   109   110   111   112   113   114   115   116   117   118   119   120
 c     b        a    a     a     b     b     b    a     a     b      a    d      a     c     a     a     c    a      b
121   122   123     124   125   126   127   128   129   130   131   132   133   134   135   136   137   138   139   140
 c     b        b    c     a     b     b     b    b     d     d     d     a      a     b     a     a     c    a      c
141   142   143     144   145   146   147   148   149   150   151   152   153   154   155   156   157   158   159   160
 d     b        a    c     c     c     a     b    b      c    b      a    a      b     c    d      b     a    b      b
161   162   163     164   165   166   167   168   169   170   171   172   173   174   175   176   177   178   179   180
 b     c    a        a     b     a     a     a    b     b     b      a    a      c     a     a     b     c    d     d
181   182   183     184   185   186   187   188   189   190   191   192   193   194   195   196   197   198   199   200
 b     b        b   d      c     b     b     c     c    b     a      c     c     b    d      a     b     a     c     c
201   202   203     204 205     206   207 208 209       210   211   212   213   214   215   216   217   218   219   220
 a     c        a    a     b     c     a     a    a      c    d     d      c     b     b     a     a    d     d      b
221   222   223     224   225   226   227   228   229 230     231   232   233   234   235   236   237   238   239 240
 d    d         c    a     c     a     a     b    d     b,d   a      a    b      b     b     a     c    d     a      c
241   242   243     244   245   246   247   248 249 250       251   252   253   254   255   256   257   258   259 260
 b     a        a    a     a     b     b    d      c    a     a      c    b      a     a     a     a     a    a      b
261   262   263     264   265   266   267   268 269     270   271   272   273   274   275   276   277   278   279 280
 b     b        a    c     c     b    d     d     a     a     a      a    a      b     a    d      c     b    a      c
281   282   283     284 285     286   287 288 289 290         291   292   293   294   295   296   297   298   299 300
 a    d         b    c     b     b    d      b    a     b      c     a    d      a     a     c     b     a    b      b
301   302   303     304 305     306   307 308 309       310   311   312   313   314   315   316   317   318   319   320
 c     b        c    c    d      a    d      b    b     d      c     c    b      a     b     b     b     a    a      a
321   322   323     324   325   326   327
 c     b        e    c    d     d     d