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Question Number 99458 by mathmax by abdo last updated on 21/Jun/20 | ||
$$\mathrm{let}\:\mathrm{g}\left(\mathrm{x}\right)\:=\mathrm{xcosx}\:\:,\mathrm{odd}\:\mathrm{and}\:\mathrm{2}\pi\:\mathrm{periodic}\:\mathrm{developp}\:\mathrm{g}\:\mathrm{at}\:\mathrm{fourier}\:\mathrm{serie} \\ $$ | ||