$\frac{dy}{dx}\left(y=\left(cos\left(x\right)\right)^{5x^3}\right)$

$\frac{d^2}{dx^2}\left(x-y+2xy=2\right)$

$\int\frac{x^2}{1-\frac{2}{3}x}dx$

$\lim_{x\to\infty}\left(\sqrt{n}\left(\sqrt{n+1}-\sqrt{n}\right)\right)$

$\frac{x}{2}>1-\frac{x}{4}$

$\left(6x-7\right)\left(2x+1\right)$

$\int\left(\cos x-\sec x\right)^2dx$