Consider the autonomous DE

dydx

$=$

$2$

y $$ sin$($y$).$

Determine the critical points of the equation. Discuss a way of obtaining a phase portrait of the equation. $($Enter your answers using interval notation.$)$

Since

$$

$2$

y $$ sin$($y$)>0$for$$ y

and

$$

$2$

y $$ sin$($y$)<0$for$$ y

$,$