I'm looking at this problem here. (Exam practice, move to homework if you want...)(adsbygoogle = window.adsbygoogle || []).push({});

First part is easy, but it's the second part that I can't quite figure out.

I'm trying to get from ∫xe^{2x}cos(2x)dx to this answer:

¼e^{2x}(x cos(2x) + x sin(2x) - ½sin(2x))+C

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# Integration by Parts with Complex Exponentials

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