Question Number 40084 by maxmathsup by imad last updated on 15/Jul/18
$${calculate}\:{lim}_{{x}\rightarrow\frac{\pi}{\mathrm{4}}} \:\:\:\:\frac{{sin}\left(\mathrm{2}{x}\right){sin}\left({x}−\frac{\pi}{\mathrm{4}}\right)}{{sinx}\:−{cosx}} \\ $$
calculate-lim-x-pi-4-sin-2x-sin-x-pi-4-sinx-cosx-