Obtain the general solution and the particular solution (if applicable) of the following nonhomogeneous linear differential equations using any method discussed in this unit unless otherwise...

Extracted text: Obtain the general solution and the particular solution (if applicable) of the following nonhomogeneous linear differential equations using any method discussed in this unit unless otherwise specified. 12. (D² -1)y=10sin² x, use the method of undetermined coefficients (Hint: Apply trigonometric power-reducing identities.)