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If y^2 = P(x) is polynomial of degree 3,...

If `y^2 = P(x)` is polynomial of degree 3, then `2(d/dx)(y^3.d^2y/dx^2)` is equal to

A

`P'''(x)+P'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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