Use the "mixed partials" check to see if the following differential equation is exact.
If it is exact find a function $F(x,y)$ whose differential, $dF(x,y)$ is the left hand side of the differential equation. That is, level curves $F(x,y) = C$ are solutions to the differential equation $$( 1e^x \sin(y) - 3y )dx + ( -3x + 1e^x \cos(y) )dy= 0$$ First, if this equation has the form $M(x,y)dx+N(x,y)dy=0$:
$M_y(x,y)=$ , and $N_x(x,y)=$ .

If the equation is not exact, enter not exact, otherwise enter in $F(x,y)$ here