The differential equation for y = A cos αx + B sin αx, where A and B are arbitrary constants is (A)d2y/dx^2-a^2y=0 (B)d^2y/dx^2+a^2y=0 (C)d^2y/dx^2+ay=0 (D)d^2y/dx^2-ay=0 contexto.140 3 years ago Correct option :(B) According to ques, Differentiating with respect to x,