$\int\:\:csch\left(3x\right).coth\left(3x\right)dx$

$3x^2-18x+6$

$\left(x^5:x\right)\cdot x^2$

$\left(\:x\left(y+2\right)-y-26\right)$

$\frac{dy}{dx}=\frac{3x^2+x-3}{5y^4}$

$\frac{dy}{dx}\left(y^2+6x^5sec\left(y\right)=cos\left(2x+y\right)+\sqrt{x}\right)$

$\frac{d}{dy}+3y=x+e^{-2x}$