$0=2\sec\left(x\right)-\sqrt{2}\sec\left(x\right)\csc\left(x\right)$

$-\frac{12}{\left(-1\right)+3}$

$\left(\frac{1}{2}x+\frac{2}{3}y^2\right)^3$

$\left(+2\right)+\left(+37\right)$

$\frac{dx}{dy}=\frac{2xy}{\left(x^2-2\right)\left(y^2+3\right)}$

$\int x\sqrt{5x+3}dx$

$\frac{dy}{dx}+4t^2=2t^2$