$\cos\left(2\left(\pi-x\right)\right)=\cos\left(2\left(x\right)\right)$

$\frac{d}{dx}\:y=4^{5x+1}$

$\frac{dy}{dx}\left(e^{2y}\cdot\cos\left(2x\right)\right)$

$x\:\frac{dy}{dx}+2y\:=\:x^4$

$48-8+31-9+7-9-8$

$7\frac{dy}{dx}=\frac{1}{\left(-10y-14\right)^{-1}}$

$\arcsin\left(\sin\left(\frac{7\pi}{4}\right)\right)$