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I forgot how to do this simple math question T.T

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I forgot how to do this simple math question T.T

manthew

how to integrate

\int xsinx^2\

by using integration by parts... apparently the Trigo will perpetuate on and on and on and on and on and on x.x

Reply 1

manthew

notnek

Let

I=\int x\sin x

If you use IBP twice then the you'll have an equation with I on the left and right hand side. Rearrange this to find I.

sorry there was a mistake.. I came out with this question myself, it supposed to perpetuate.

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I forgot how to do this simple math question T.T

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