Hey guys. I'm having trouble with 3 questions:

1. I(0->pi/2) I(0->cos(theta)) e^(sin(theta)) dr d(theta)...evaluate

I get as far as I(0->pi/2) cos(theta) e^(sin(theta)) d(theta)...and then, I guess you have to use integration by parts, but no matter how I try to set it up I end up with something complicated.

2. I(0->1) I(3y->y) e^(x^2) dxdy...evaluate the integral by reversing the order of integration.

Same problem as #1.

Any degree of help is appreciated. Thanks!