Suppose that f x is the sum of the Fourier series 3 2n f x sin nx 1 1 n sin x sin 2x sin 3x x Compute the integral 1 f x 1 sin

Question

Suppose that f x is the sum of the Fourier series 3 2n f x sin nx 1 1 n sin x sin 2x sin 3x x Compute the integral 1 f x 1 sin 2x dx A 127 B 17 C 167 D 7 E 14 5 5

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