$\frac{-\frac{3}{5}a^3b^2}{-\frac{4}{5}a^2b}$

$\frac{d^2}{dx^2}\left(3\cdot\csc\left(3x\right)\cot\left(3x\right)\right)$

$\frac{dy}{dx}\left(y=tan^{-1}\left(ln3x^5\right)\right)$

$\frac{12.25}{3}$

$\int_{-7}^7\left(\frac{cosh\left(x\right)}{1+sinh\left(x\right)}\right)dx$

$\int\:\frac{4x^2+2\:}{\sqrt{3x+\:2}}\:dx$

$y+x-x$