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Form the differential equation of simple...

Form the differential equation of simple harmonic motion given by `x=A cos(nt+alpha)`, where n is fixed and `A, alpha` are parameters.

A

`(d^2x)/(dt^2)-n^2x=0`

B

`(d^2x)/(dt^2)+n^2x=0`

C

`(dx)/(dt)-(d^2x)/(dt)=0`

D

`(d^2x)/(dt^2)-(dx)/(dt)+nx=0`

Text Solution

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The correct Answer is:
B
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