IIT JAM Physics Practice Questions - Joint Admission Test For Masters - Physics (PH) Exam

The general solution of the second-order ODE d²y/dx² + 4y = 0 is given by which expression?

y = A·e^(2x) + B·e^(-2x) y = A·cos(2x) + B·sin(2x) y = A·cos(4x) + B·sin(4x) y = (A + Bx)·e^(-2x)

Correct Answer:

y = A·cos(2x) + B·sin(2x)

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