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    Write down a Fourier series for a square wave

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    Consider a square wave. Write down a Fourier series for this function, and plot the original function and the series approximation for n = 1, 2, 3, 4, 5, 10, 20, 50. There should be 9 curves, including the original.

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    https://brainmass.com/math/fourier-analysis/write-down-a-fourier-series-for-a-square-wave-507242

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    This solution helps with a problem regarding Fourier series.

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