Question Number 117251 by mathmax by abdo last updated on 10/Oct/20
$$\mathrm{let}\:\mathrm{f}\left(\mathrm{x}\right)=\:\mathrm{ln}\left(\mathrm{3}−\mathrm{sin}\left(\mathrm{2x}\right)\right) \\ $$$$\mathrm{developp}\:\mathrm{f}\:\mathrm{at}\:\mathrm{fourier}\:\mathrm{serie} \\ $$