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Homework Help: Fourier transform - would appreciate if my answer can be checked

  1. Jan 21, 2012 #1
    1. The problem statement, all variables and given/known data

    Question: Find the fourier series for

    f(x) = x(2π-x) 0<x<2π f(x) = f(x+2π)

    hope the pi is clear as π

    3. The attempt at a solution
    this is in the attachments

    Attached Files:

  2. jcsd
  3. Jan 21, 2012 #2


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    The constant term should be ##2\pi^2/3##, but other than that, your answer looks fine.

    One easy way to check your answer is to simply plot the series using a computer.

    By the way, you're finding a Fourier series, not a Fourier transform, which is a different but related concept.
  4. Jan 22, 2012 #3
    Thanks Vela for checking, oops been doing both topics lately, slip of the tongue
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