Question Number 36393 by abdo.msup.com last updated on 01/Jun/18
$${let}\:{f}\left({x}\right)\:=\:\frac{\mathrm{2}}{{sinx}}\:\:\:,\mathrm{2}\pi\:{periodic}\:{odd} \\ $$$${developp}\:{f}\:{at}\:{fourier}\:{serie}\:. \\ $$
let-f-x-2-sinx-2pi-periodic-odd-developp-f-at-fourier-serie-