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If r is the radius of the circle x^(2)+y...

If r is the radius of the circle `x^(2)+y^(2)+2gx+2fy+c=0," then: "(y+f)^(3)(d^(2)y)/(dx^(2))=`

A

`-r^(2)`

B

`r^(2)`

C

`g^(2)+f^(2)-r`

D

`r^(3)`

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The correct Answer is:
A
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MARVEL PUBLICATION-DIFFERENTIATION-MULTIPLE CHOICE QUESTIONS (TEST YOUR GRASP - II : CHAPTER 11)
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