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

$\left(x+3\right)\left(x-2\right)\left(x+8\right)\le4$

$69+4-\left(-2\right)+4$

$25c<-25$

$\frac{dy}{dx}=\frac{\left(x+1\right)sinx}{tany}$

$3\sec^3\left(x\right)-4\sec\left(x\right)=0$

$\int tan\left(\frac{1}{2}x-3\right)dx$