Critical Numbers
A series of free Calculus Video Lessons.
The following diagram gives the definition of a critical number. Scroll down the page for more examples of how to find the critical numbers of a rational number.
How to find the critical numbers of a rational function?
Finding Critical Numbers - Example 1
This video shows how to find the critical numbers of a rational function.
Finding Critical Numbers - Example 2
Try the free Mathway calculator and
problem solver below to practice various math topics. Try the given examples, or type in your own
problem and check your answer with the step-by-step explanations.
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.