$\frac{x-3}{x-2}\ge x$

$\int_3^5\left(x^2+3\right)xdx$

$\frac{dy}{dt}=y-t,\:y\left(1\right)=1$

$\frac{dv}{dt}=\frac{3+v^2}{v}$

$\left(1+\tan\left(a\right)\right)\sec^2\left(a\right)=1$

$\sin\left(x\right)-\cos^2\left(x\right)=\sin^2\left(x\right)$

$2.2\cdot\frac{1}{2}$