Question:medium
If \( x = A\cos 4t + B\sin 4t \), then \( \frac{d^2x}{dt^2} = \)
If \( x = A\cos 4t + B\sin 4t \), then \( \frac{d^2x}{dt^2} = \)
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Second derivative of \( \sin(ax),\cos(ax) \) gives factor \( -a^2 \).
Updated On: May 1, 2026
- \( x \)
- \( -16x \)
- \( 15x \)
- \( 16x \)
- \( -15x \)
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The Correct Option is B
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