having trouble with setting up integral by parts

I understand how to solve integrals by parts. My problem lies in setting up the variables so that I can begin solving it.

Scanned is my work and how I set up the variables in what I believe are good except for the v and dv.

If I can get v and dv correct then I know how to solve this but need a little kick start.

If , then

Here is my final answer.

So we would then multiply 1/2 by [1/2 * sin(2x)] = 1/4 * sin(2x)?

Quote:

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Originally Posted by solidstatemath

So we would then multiply 1/2 by [1/2 * sin(2x)] = 1/4 * sin(2x)?

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Yes...