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If f(x)=(a+sqrt(a^2-x^2)+x)/(sqrt(a^2-x^...

If `f(x)=(a+sqrt(a^2-x^2)+x)/(sqrt(a^2-x^2)+a-x)` where `a>0` then `f'(0)` has the value equal to

A

`sqrta`

B

a

C

`(1)/(sqrta)`

D

`(1)/(a)`

Text Solution

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The correct Answer is:
D
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