8.2 Integration by parts Problem 1. Use the formula fu dv = uv - | v du to evaluate. We'll go over the shortcut next week a) f cos(2x) * x dx b) flog, x dx c) S sin(5x) * x3 dx d) f In(9x) dx e) f x * sec x dx Useful integral for parte Stanx dx = In|secx] + CUseful integral for parte Stanx dx = In|secx] + C Bonus Question: J x * sin(6x) * cos(6x) dx Hint: Use Trig identity before implementing Integration by parts