$\frac{dy}{dx}=\left(5-x\right)^3$

$\frac{\tan\left(x\right)+\tan\left(y\right)}{\left(1-\tan\left(x\right)\right)\left(\tan\left(y\right)\right)}$

$\cot\left(\frac{3\pi}{2}+t\right)$

$42x^2+30y^2-10=0$

$13x-2\left(6x-4\right)=72$

$\lim_{x\to\infty}\left(\frac{\sqrt{6x^2+7}}{6x+1}\right)$

$x^6+y^6=\left(x^2+y^2\right)\left(x^4-x^2y^2+y^4\right)$