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Sure wish I found this forum like two years ago! Anyways, as my cherry-popping post I shall seek knowledge for the fore-going:

The anti-derivative for xcos(x)?

I was able to do (2x)cos(x^2) = sin(x^2), but xcos(x) has boggled me. I am not seeing it.

Can anyone give me the answer and a good strategy/rule of thumb for tackling similar anti-derivatives?

Thanks a million!