# Science:Math Exam Resources/Courses/MATH101/April 2011/Question 01 (b)/Solution 1

Using Hint 2, we may immediately rewrite as

We would like to use Hint 1, but it would only be applicable if the upper limit of integration were , which in this case is not true. So we define

- .

From Hint 1, we see immediately that . We also see that . Using the chain rule, we can then compute that