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Math Help - Fourier's Serier

  1. #1
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    Fourier's Serier

    f(x)= x^2 , 0 <= x <= 1

    x , -1 <= x <= 0

    I found a[o] put having trouble finding a[n].
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  2. #2
    Super Member
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    Where are you stuck finding a_n? I think you need to integrate by parts twice for the first and one time for the second.
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