1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution Here is my attempt : I just can't get the answer the writing near the bottom is me trying to get the left hand side , so you can basically ignore that. But I don't think I made the correct first step... any advice? Didn't notice the picture was so blurry, the first thing I did was just proceed to integrate In by parts.