f(x)= x|x| , -1<x<1 i did a sine series because function is odd over given interval. p=1 so, bn= 2 ∫ x^2 sin(npix) dx , from 0 to 1not sure how to do this integral, any help would be appreciated.
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For bn, do you want the exact value, or its series representation?
series representation i think. the question says "expand the given function in an appropriate sine or cosine series"
Originally Posted by linalg123 series representation i think. the question says "expand the given function in an appropriate sine or cosine series" Okay, using the Maclaurin series for the sine function, we have: The exact value can be calculated too:
Last edited by TheCoffeeMachine; May 18th 2011 at 12:42 AM.
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