Questions asked
\( \left.e^{y}+2\right) \sin (x) d x-e^{y} \cos (x) d y=0 \)
\( +4 y^{\prime}+5 y=25 x^{2}+13 \sin (2 x) \)
\( x(y-x) \frac{d y}{d x}=y(y+x) \)
