NInverseFourierCoefficient

NInverseFourierCoefficient[expr,n,t]
gives a numerical approximation to the function, evaluated at t, whose Fourier exponential series representation has coefficients given by expr, where expr is a function of n.

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Basic Examples  (1)Basic Examples  (1)

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Numerical approximation for a function with a given Fourier series:

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Compare with the answer from symbolic evaluation:

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