$x\left(x-3\right)>3x$

$\frac{25x^2}{4}+\frac{20xy}{3}+\frac{2y^2}{3}$

$\frac{dy}{dt}=y\:+1\:+\:t^2\sin\left(t\right)$

$xy^2dx-4x^2ydy=0$

$\int\frac{e^x}{\sqrt{1-4e^{2x}}}dx$

$\int\frac{2x-3}{\sqrt{25-x^2}}dx$

$\lim_{x\to\infty}\left(\left(x\right)\sin\left(\frac{\pi}{x}\right)\right)$