$\frac{d}{dx}\left(x=cosx\right)$

$\sqrt[3]{a}-3a^{\frac{1}{3}}+\sqrt[3]{\frac{a}{8}}$

$\lim_{x\to-2}\left(\frac{4x^2+7x-2}{x^2-5x+14}\right)$

$e^2\cdot e^x$

$a^2\cdot a$

$2x-3\le3x+7$

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