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Homework Help: Small but pressing Fourier series question

  1. Nov 25, 2012 #1
    1. The problem statement, all variables and given/known data
    Please see picture attached


    2. Relevant equations



    3. The attempt at a solution
    ck = 1/T ∫ a-a x(t).e-jk2pit/T

    So x(t) = Ʃk=-∞ (sin(k.a.2pi/T).a-a e-jk2pit/T)/k.pi

    but is is supposed to be:

    So x(t) = Ʃk=-∞ (sin(k.a.2pi/T).a-a e-jk2pit/T)/k.pi.2.a

    but I don't know why?

    Thanks
     

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    Last edited: Nov 25, 2012
  2. jcsd
  3. Nov 25, 2012 #2
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