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Math Help - Fourier series-02

  1. #1
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    Fourier series-02

    Please help me to find the answer for "How to obtain the Fourier series for the function f(x) = |cos x| where -pi < x < pi"
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  2. #2
    Senior Member Shanks's Avatar
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    Just calculate the fourier coefficients of the fourier series, and put them into the fourier series fomullar .
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  3. #3
    Junior Member
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    you are asking me for:

    f(x)=\mbox{-Cos x     if} -\pi<x<0

    f(x)=\mbox{Cos x  if }0<x<\pi

    and then find the a_n, a_0, b_n

    isn't it...
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