$\frac{2 \cos 5 \theta+\sin 3 \theta \sin 2 \theta}{2 \cos 5 \theta-\cos 3 \theta \cos 2 \theta}$

$\frac{2 \cos 5 \theta-\sin 3 \theta \sin 2 \theta}{2 \cos 5 \theta+\cos 3 \theta \cos 2 \theta}$

$\frac{2 \cos 5 \theta+\cos 3 \theta \cos 2 \theta}{2 \cos 5 \theta-\sin 3 \theta \sin 2 \theta}$

$\frac{2 \cos 5 \theta-\sin 3 \theta \sin 2 \theta}{2 \cos 5 \theta-\cos 3 \theta \cos 2 \theta}$

-3

3

$-\frac{1}{3}$

$\frac{1}{3}$

$\frac{2 x y}{\left(1+x^2\right)^2}$

$-\frac{(x+y)}{\left(1-x^2\right)^2}$

$\frac{2(x y)}{1-x^2}$

$-\frac{2(x+y)}{1-x^2}$

1

0

$\log _e 4$

$\log _4 \mathrm{e}$