1. $\displaystyle \int x^2sin2x dx$

2.$\displaystyle \int (x+3)/(x+1) $

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- Jan 21st 2010, 05:31 PMlittlesohimore integration!
1. $\displaystyle \int x^2sin2x dx$

2.$\displaystyle \int (x+3)/(x+1) $ - Jan 21st 2010, 05:33 PMJhevon
Hint: integration by parts: $\displaystyle u = x^2, ~dv = \sin 2x dx$ (you will have to do integration by parts twice.

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2.$\displaystyle \int (x+3)/(x+1) $