# Math Help - integration - urgent help please

1. ## integration - urgent help please

the integral from 0 to 4pi of t*sin(2t) dt.

thank you very much.

2. Originally Posted by kittycat
the integral from 0 to 4pi of t*sin(2t) dt.

thank you very much.
use integration by parts. u = t, dv = sin(2t)

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