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I couldnt find any proof of the following statement: The Fourier series expansion of f(x), which has a discontinuity at y, takes on the mean of the left and right limits

i.e. f(y)= (1/2)(f(y^{+})+f(y^{-}))

is there anyone who can help me?

Thanks

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# Homework Help: Jump discontinuity with fourier series

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