I need solution steps 6. Find the general solution of the differential equation \( y^{\prime \prime}+4 y=4 \sin (2 x)+8 \cos (2 x) \). \[ \text { Answer: } y=c_{1} \sin (2 x)+c_{2} \cos (2 x)+2 x \sin (2 x)-x \cos (2 x) \] 2 answers