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Fourier series by using MATLAB

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Find the Fourier Series coefficients for the signal (see the attached file).
Use Matlab to plot the truncated Fourier series reconstruction for the signal, using the first 15 terms of the sum.
Given an and bn, what would be the complex coefficients if you had instead calculated the complex exponential Fourier series expansion?

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The expert examines a fourier series by using MATLAB.

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