Posted by sam on Sunday, February 7, 2010 at 6:45pm.
Isn't there are identity
sin2x=1-2sin^2 x ?
I dont understand what you are saying. there is no sin2x in my equation i dont think
i have to evaluate the integral 2(sin^2x)
Try
sin(x)sin(y)=(1/2)(cos(x-y)-cos(x+y))
Put y=x and noting that cos(0)=1, you will have a simpler expression to integrate.
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