If y = a cos (log x) and A d^2 y/dx^2 + B dy/dx + C = 0, then the values of A, B, C are ______

Question

If y = a cos (log x) and \(A\frac{d^2 y}{dx^2} + B\frac{dy}{dx} + C = 0,\) A d²y/dx² + B dy/dx + C = 0, then the values of A, B, C are ______

(a) x², -x, -y

(b) x², x, y

(c) x², x, -y

(d) x², -x, y

Answer 1

Correct answer is (b) x², x, y