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If f(x )=sqrt(25-x^(2)), then what is un...

If `f(x )=sqrt(25-x^(2))`, then what is `underset(xto1)lim(f(x)-f(1))/(x-1)` equal to

A

`1/24`

B

` 1/5`

C

`-sqrt(24)`

D

`1/(sqrt24)`

Text Solution

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The correct Answer is:
D
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AAKASH INSTITUTE-CONTINUITY AND DIFFERENTIABILITY-Assignment ( section -A)
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