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Mathematica : Fourier Series Expansions

Please help me in solving this problem.
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Using Mathematica and computer facilities express the function f(x) in terms of Fourier series expansion and show that the series converges as the number of terms increases:

f(x) = x e-x/4 sin(x/3) -&#960; < x < &#960;

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Solution Summary

A Fourier series expansion is investigated with the aid of Mathematica.

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