Question Number 142245 by mathmax by abdo last updated on 28/May/21
$$\mathrm{developp}\:\mathrm{at}\:\mathrm{fourier}\:\mathrm{serie}\:\mathrm{f}\left(\mathrm{x}\right)=\frac{\mathrm{1}}{\lambda\:+\mathrm{sinx}}\left(\:\lambda\:\mathrm{real}\:>\mathrm{0}\right) \\ $$