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MATLAB Conditional and Loop Examples

This document contains the student's answers to 4 questions involving MATLAB code. Question 1 checks if a year variable is before, equal to, or after 1800. Question 2 displays dates and checks if they are before or after 1814. Question 3 displays restrictions for alcohol and activities depending on a person's age. Question 4 numerically approximates an integral using the trapezoidal rule.

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Mohd Khairul Fahmi
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48 views2 pages

MATLAB Conditional and Loop Examples

This document contains the student's answers to 4 questions involving MATLAB code. Question 1 checks if a year variable is before, equal to, or after 1800. Question 2 displays dates and checks if they are before or after 1814. Question 3 displays restrictions for alcohol and activities depending on a person's age. Question 4 numerically approximates an integral using the trapezoidal rule.

Uploaded by

Mohd Khairul Fahmi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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MOHD KHAIRUL FAHMI BIN MUHAMAD 2018400498

Q1 year = 1750;

if year < 1800

disp('Year is before 1800');

elseif year == 1800

disp('Year is 1800');

else

disp('Year is above 1800');

end

Ans: Year is before 1800

Q2 dates = [1015 1066 1660 1814 1905 2014];

how_may_dates = length(dates);

for i = 1: how_may_dates

disp(['The date is: ' num2str(dates(i))]);

if dates(i) < 1814

disp('Before 1814');

elseif dates(i) == 1814

disp('It is 1814!');

else disp('After 1814');

end

end

ans: The date is: 1015


Before 1814
The date is: 1066
Before 1814
The date is: 1660
Before 1814
The date is: 1814
It is 1814!
The date is: 1905
After 1814
The date is: 2014
After 1814
MOHD KHAIRUL FAHMI BIN MUHAMAD 2018400498

Q3 age = 17

if age < 18

disp('None');

elseif age < 20

disp('Alcohol below 22%, no clubbing nor teach');

elseif age < 21

disp('Alcohol above 22%, but no clubbing nor teaching ');

elseif age < 25

disp('Alcohol above 22% and clubbing, but no teaching ');

else

disp('All allowed');

end
ans: age = 17
None

Q4 f = @(x)x*sin(x);
a = 0;
b = pi/2;
n = 10;
h = (b-a)/n;
s = 0.5*(f(a)+f(b));
for i = 1:n-1
s = s + f(a+i*h)
end
I = h*s

Ans: s = 0.8100
s = 0.9071
s = 1.1210
s = 1.4903
s = 2.0457
s = 2.8081
s = 3.7879
s = 4.9830
s = 6.3793

I = 1.0021

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