$2y\:cos\left(x\right)dx\:+\:3\:sin\left(x\right)\:dy\:=0$

$9xy+3x$

$\left(8-9+59\right)+2$

$\frac{5csc\left(x\right)}{csc\left(x\right)-cot\left(x\right)}=5csc\left(x\right)\left(csc\left(x\right)+cot\left(x\right)\right)$

$\lim_{x\to\infty}\left(\frac{\cos\left(x\right)}{2-x^2}\right)$

$z^3+9z^2+27z+27$

$\frac{dy}{dx}=\frac{-\left(x-y+2\right)}{3}$