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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Originally Posted by xslim12 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 IBP is what was your u? dv? and so your du and v? Ü
u=x du=1 dv=sinx v=-cosx and i still get the same answer i got before =/
Last edited by xslim12; November 4th 2007 at 09:52 PM.
for set so, so original is
Last edited by kalagota; November 4th 2007 at 11:18 PM.
Originally Posted by kalagota Of course, over the simetric interval we're integratin' an even function, so we can set
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