(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

This is one of these AP free response questions divided into a,b,c,d,etc. but im just going to ask for a small part of the problem.

I need to integrate y=7te^{cost}

3. The attempt at a solution

I tried using U substitution but it didn't work. I tried things like the following:

Integrate with respect to t (dt).

make e^{cost}=u and t=-cosln(t)

but it seems I am complicating my life. Any tips?

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# Help with an integral please

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