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If underset(x to oo)lim (sqrt(x^(2)-ax)...

If `underset(x to oo)lim (sqrt(x^(2)-ax)-x)=1/2" then a="`

A

2

B

0

C

`-1`

D

`1//2`

Text Solution

Verified by Experts

The correct Answer is:
C
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