# Math Help - Integration problem

1. ## Integration problem

Hello all,

I am having problems on the following problem:

The answer I came up with is this:

$-4xcosx(1/4)sinx$

My Homework is saying it's wrong though, can someone tell me why this is wrong.

2. Go through the formula for integration by part.

3. I just went through it again, and came up with the same answer.

4. integrat 4x&#42;sin&#40;x&#41;dx - Wolfram|Alpha
Go to this site. Be sure to click "show steps"

5. Thanks for your help, great site too!