$\frac{\left(cosx\right)\left(1-cos2x\right)}{sin2x}$

$\frac{dy}{dx}\left(y=\left(2x\right)^{\sqrt{x}}\right)$

$\frac{dy}{dx}\left(\frac{4x+y}{x-2y}\right)=8$

$-1d\:+\:3r\:-\:7h\:+\:1\:-\:6h\:+\:9d\:-\:r\:+\:17\:$

$\frac{t+t+t+t}{4}$

$\lim_{x\to0}\left[\frac{1}{8e^x}-\frac{1}{8x}\right]$

$3y=\frac{dy}{dx}+x^2$