$\frac{d}{ds}\left(\left(s\cdot cos\left(t\right)\right)^2\cdot\left(s\cdot sin\left(t\right)\right)^3\right)$

$\int\frac{\csc\left(2b\right)^2}{\sqrt{1+\cot\left(2c\right)}}db$

$\left(x^2+37\right)y'=xy$

$4x-8<x-2$

$\left(\frac{2}{3}+\frac{4}{5}x^9\right)^2$

$\frac{dy}{dx}=5x^2e^{-y}$

$\frac{dy}{dx}=\frac{\left(xy+4y-x-4\right)}{\left(xy-9y+x-9\right)}$