$\cos\left(\frac{3\pi}{2}\right)\cos\left(x\right)+\sin\left(\frac{3\pi\:}{2}\right)\sin\left(x\right)$

$x\left(x^2+2\right)$

$\log\left(3z\right)=\log\left(9\right)$

$\frac{d}{dx}\sin\left(3x-1\right)$

$\:\frac{dy}{dx}\left(\frac{2ycos}{sin\:x}\right)=sin^4x$

$4sec^2\theta\:-3=1+4tan^2\theta\:$

$4m+2m-n$