# Calculation trouble

1. Feb 9, 2006

### asdf1

in calculating a question, i'm stuck on how to integrate this:
$$\int_{0}^{2pi} -(cos^2 x)(sinx) dx$$

could someone help?

Last edited: Feb 9, 2006
2. Feb 9, 2006

### matt grime

integrate the following family of functions

f'(x)f(x)^n

3. Feb 9, 2006

### HallsofIvy

Staff Emeritus
There is a standard technique for integrals involving an odd power of sine or cosine. That is what Matt is talking about. Check your textbook for that.

4. Feb 9, 2006

### matt grime

it wasn't what i was knowingly talking about, i was just pointing out in fact that integrating that is not a 'trig' problem, and belongs to a far more generic type of integral.

5. Feb 12, 2006

### asdf1

thank you!!! :)