$2xydx+\left(y^2+x^2\right)dy$

$f\left(x\right)=x^2+2x\left|5.8\right|$

$\frac{dy}{dt}=4\left(1-y\right)$

$\int\:\left(x^2+4\right)x\:dx$

$9-\:6\:-\:\left[\:\left(-32\:-\:15\:+8\right)\:-\:22\right]\:-\:7$

$2\left(8-9\right)+41$

$\frac{dy}{dx}\left(x^2+4y^2=4\right)$