Fourier Example - Triangular Function

In this example the original function is f(t) = -2t - 1 for -1 < t < 0 and f(t) = 2t - 1 for 0 < t < 1.

The LiveMath document gives an animation showing the first term of the expansion [the first term is y = cos(πt)] up to the sum of the first 10 terms.

Open LiveMath file

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