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Finding sums using Fourier

  1. Apr 7, 2008 #1
    This is a general question, I guess. If I am given an infinite series, how do I go about finding its sum using Fourier expansion?
     
  2. jcsd
  3. Apr 7, 2008 #2

    quasar987

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    You find a function such that when expanded in a fourier series and then evaluated at a certain point coincide with the numerical series.
     
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