Lets say that you have a function f and a FS:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]

\sum_{n=1}^{\inf}a_{n}cos(xn) + b_{n}sin(xn)

[/tex]

what is the FS of

[tex]

g(x) = (f(x) + f(-x))/2

[/tex]

I think that the answer is

[tex]

\sum_{n=1}^{\inf}a_{n}cos(xn)

[/tex]

am i right?

thanks.

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# Homework Help: Fourier series

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