The general solution of Y '' = SiNx

The general solution of Y '' = SiNx

∵ y '' = SiNx = = > y '= C1 cosx (C1 is an integral constant)
==>Y = c1x SiNx + C2 (C2 is the integral constant)
The general solution of the original equation is y = c1x SiNx + C2