A) 2
B) 4
C) 1
D) 1/2
E) 3
Correct Answer: A
Solution :
\[\underset{x\to 1}{\mathop{\lim }}\,\frac{\sqrt{f(x)}-1}{\sqrt{x}-1}\] Using\[L\]Hospitals rule, \[=\underset{x\to 1}{\mathop{\lim }}\,\frac{\sqrt{x}f(x)}{\sqrt{f(x)}}=\frac{1.f(1)}{f(1)}=\frac{2}{1}=2\]You need to login to perform this action.
You will be redirected in
3 sec