Ready solution of the problem. The sorcerer of Arutyunov. Task number 461.
461 - 470. Expand this function f (x) in a Fourier series in the interval (a, b).
461. f (x) = x + 1 in the interval (-π, π)
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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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