$y'-xy^2=2xy$

$3x^2-21x+32$

$\int\:\cos^2\left(x\right)\cos^2\left(2y\right)dx$

$\lim_{x\to\infty}\frac{x+sin\left(x\right)}{x+1}$

$-5x^3y+2x^2+3x-2x^2+8x^3+y$

$1+\sec^{2}\left(\theta\right)\left(1-\sin^{2}\left(\theta\right)\right)$

$\frac{d^2}{dx^2}\left(3x^2+lnxy\right)$