ok what am i doing rong =/

integral of xsinx

i am using integration by parts and what i get is cosx-xcosx

but the answer is sinx-xcosx

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- Nov 4th 2007, 08:21 PMxslim12another tirg integral
ok what am i doing rong =/

integral of xsinx

i am using integration by parts and what i get is cosx-xcosx

but the answer is sinx-xcosx - Nov 4th 2007, 08:27 PMkalagota
- Nov 4th 2007, 08:35 PMxslim12
u=x du=1

dv=sinx v=-cosx

and i still get the same answer i got before =/ - Nov 4th 2007, 09:56 PMkalagota

for

set

so,

so original is - Nov 5th 2007, 04:26 AMKrizalid