how to do exponential fourier?

Discussion in 'Math' started by stupid, Nov 22, 2010.

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  1. stupid

    Thread Starter Active Member

    Oct 18, 2009
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    it is a exponential fourier coefficient..
    i m lost at how to proceed thence.

    question: find exp fourier series for D_n=\frac{1}{T}\int_{0}^{T/2}Ae^{-jn\omega t} dt

    after some deduction,
    D_n=\frac A {j2\pi n}(1-e^{-jn\pi})

    i have the problem how that proceeds to,
    D_n=\frac A{2\pi n}[1-cos(n\pi)]e^{-jn/2}

    i would very appreciate someone will guide me...thank u.
     
  2. stupid

    Thread Starter Active Member

    Oct 18, 2009
    81
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    my working process is this.
    thereafter i need help.
     
  3. bertus

    Administrator

    Apr 5, 2008
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    stupid likes this.
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