Which of the following are true for the differential equation d'y +n y = sec nx (a) (b) (c) cf c,e+ c,e-* cf = c, cos nx + c, sin nx x 1 pi = sin nx + n cos nx

Which of the following are TRUE for the differential equation d'y +n y = sec nx (A) (B) (C) CF c,e+ C,e-* CF = C, cos nx + C, sin nx X 1 PI = sin nx + n COS nx log cos nx X 1 (D) P = cos nx - Sin nx log cos nx n n