If f(x)=sqrt(x-1)+sqrt(x+24-10sqrt(x-1),...

If `f(x)=sqrt(x-1)+sqrt(x+24-10sqrt(x-1),1lexle26` be real valued function then f'(x) for `1ltxlt26` is

A

0

B

`1/sqrt(x-1)`

C

`2sqrt(x-1)-5`

D

none of these

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The correct Answer is:

A

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