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If `y^2 = p ( x ),` a polynomial of degree 3, then `2 d/(dx) (y^3 (d^2y)/(dx^2))` equals :

A

`P'''(x)+'x`

B

`P''(x)*P'''(x)`

C

`P(x)*P'''(x)`

D

None of these

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The correct Answer is:
C
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