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underset(x to 0) (sqrt(a +x) - sqrt(a))/...

`underset(x to 0) (sqrt(a +x) - sqrt(a))/(x sqrt(a^(2) + ax))` is equal to

A

`2 sqrt(a)`

B

`sqrt(a)`

C

`(1)/(2sqrt(a))`

D

`(1)/(2a^(3//2))`

Text Solution

Verified by Experts

The correct Answer is:
D
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