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If force F varies with displacement x as...

If force F varies with displacement x as` F=3x^2+4`. The rate of change of F with respect to x, at x=5.33 m

A

64 `Nm^-1`

B

`128Nm^-1`

C

`32Nm^-1`

D

none of these

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The correct Answer is:
C
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