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Math Help - Parsevalís theorem / Fourier series

  1. #1
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    Parsevalís theorem / Fourier series

    Can soneone please help me with this problem:

    Use Parseval’s theorem to estimate approximately how many terms of the Fourier series are required to be summed to give a typical error of 0.1 on f(x)= X^2 from (-pie, pie).

    thanks
    Last edited by nerdo; December 8th 2009 at 10:36 AM.
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