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First problem in Fourier series A. Compute the Fourier series for the square wave f(x) = {0, −l < x < 0 l, 0 < x < l B. Use your result to show that π4 = 1 − 13 + 15 − 17 +… = ∑n = 0∞(−1)n 2n+1

First problem in Fourier series A. Compute the Fourier series for the square wave f(x) = {0, −l < x < 0 l, 0 < x < l B. Use your result to show that π4 = 1 − 13 + 15 − 17 +… = ∑n = 0∞(−1)n 2n+1

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First problem in Fourier series A. Compute the Fourier series for the square wave
f ( x ) = { 0 , − l < x < 0 l , 0 < x < l
B. Use your result to show that
π 4 = 1 − 1 3 + 1 5 − 1 7 + … = ∑ n = 0 ∞ ( − 1 ) n 2 n + 1

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