\(\displaystyle \displaystyle F(x)=x^2,\ 0<x<2\pi,\) with period 2π.
This is an even function right? Could someone please explain to me why the resulting series is not solely a cosine series and instead the coefficient of the sine part is not zero if we integrate from 0 to 2π?
Thanks.
This is an even function right? Could someone please explain to me why the resulting series is not solely a cosine series and instead the coefficient of the sine part is not zero if we integrate from 0 to 2π?
Thanks.
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