State and prove Parseval's identity for Fourier series.

1.	State and prove Parseval's identity for Fourier series.
Answer» In mathematical analysis, Parseval's IDENTITY, named after Marc-Antoine Parseval, is a fundamental result on the summability of the Fourier SERIES of a FUNCTION. GEOMETRICALLY, it is a generalised Pythagorean theorem for inner-product spaces (which can have an uncountable INFINITY of basis vectors).Step-by-step explanation:HopeithelpU

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State and prove Parseval's identity for Fourier series.​

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State and prove Parseval's identity for Fourier series.