1. The problem statement, all variables and given/known data e^x * sin(x) 2. Relevant equations uv - integral vdu 3. The attempt at a solution FIRST, I set u = e^x, du = e^x, dv = sin(x)dx, v = -cos(x) Using, uv - integral vdu e^x * -cos(x) - [ e^x * -cos(x)dx -e^x * cos(x) + [ e^x * cos(x) Now I'm stuck... if I keep integrating... I'll keep going in a loop of sin/cos(x) and e^x. Am I going about this in the wrong way?