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037 G
Lv 6
037 G asked in Science & MathematicsPhysics · 1 decade ago

Exponential F series?

express periodic impulse delta T = sigma of (delta (t-nT) for n from - to + infinity in terms of exponential Fourier series Cn using exponential Fourier series.

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  • 1 decade ago
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    Straightforward. Set:

    Sum_n delta(t - nT) = Sum_k=-oo^+oo C_k exp(i 2 pi k t/T)

    Multiply both sides by exp(-i 2 pi m t/T) and integrate from -T/2 to T/2 to get the coefficients C_k = 1/T -->

    Sum_n delta(t - nT) = (1/T) Sum_k=-oo^+oo exp(i 2 pi k t/T)

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