Practicing Success
If $y=A \sin x+B \cos x$, then which of the following is correct? |
$\frac{d^2 y}{d x^2}-y=0$ $\frac{d^2 y}{d x^2}+y=0$ $\frac{d^2 y}{d x^2}=\frac{d y}{d x}$ $\frac{d^2 y}{d x^2}=\frac{-d y}{d x}$ |
$\frac{d^2 y}{d x^2}+y=0$ |
The correct answer is Option (2) → $\frac{d^2 y}{d x^2}+y=0$ |