$\left(\tan\left(x\right)+\cot\left(x\right)\right)^3$

$\frac{d}{dx}\left(x^3+y^3=4xy+1\right)$

$\frac{12x^3+50x^2y-xy^2}{2x+\left(-3x+y\right)\left(y-x\right)}$

$\frac{dy}{dx}\left(x^3.\sin\left(y\right)+\cos\left(x\right)=y^4\right)$

$\ln\left(\frac{y}{x^{\frac{1}{2}}}\right)=1$

$4-\left(-13\right)$

$\sec^2\left(x\right)-\tan\left(x\right)=1$