Problems On Differential Equation

Problems on Differential Equation-5:

17. Solve (D² 1)y = sin²x

Solution: A.E: m² 1 = 0

                        m = ±i

              C.F = A cosx B sinx

∴ y =
            

18. Solve

Solution: A.E: m² 1 = 0

                     m = ±i

            C.F = Ae^-x Be^x