My lecturer give weekly assignments for our class and each assignment is individual, he also makes a sample sheet with similar questions that we may ask for assistance with tutors and the likes, There's one particular question that has me stumped in my assignment I'm aware that anti derivatives are key to solving the question but I can't figure out how to go about solving it.

This is the sample sheets version of the question so I'm more interested in the step by step solution than the actual answer. Thanks in advance!

And just so I can't be accused of trying to get people to do my assignment here's a link to assignment page log in as a guest and choose sheet 6 and you'll see the question there.

http://alberti.nuigalway.ie:8125/exquery.html