Use Parseval's formula and the Fourier decomposition of the function f(x) = x on the interval...

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Use Parseval's formula and the Fourier decomposition of the function f(x) = x on the interval [-, π] to establish the sum of the series of reciprocal squares: 1 23-7 n² 6 n=1 Use Parseval's formula and the Fourier decomposition of the function f(x) = x on the interval [-, π] to establish the sum of the series of reciprocal squares: 1 23-7 n² 6 n=1