$\lim _{x \rightarrow x}\left[\frac{\sqrt{x}-1}{\log x}\right]=$

$\lim _{x \rightarrow x}\left[\frac{\sqrt{x}-1}{\log x}\right]=$
  1. $\frac{1}{2}$
  2. $2$
  3. $-2$
  4. $-\frac{1}{2}$

Solution

$\begin{aligned} & \lim _{x \rightarrow x}\left[\frac{\sqrt{x}-1}{\log x}\right] \\ & =\lim _{x \rightarrow 1} \frac{\frac{1}{2 \sqrt{x}}}{\left(\frac{1}{x}\right)} \\ & =\frac{1}{2} \end{aligned}$ ... [L' Hospital rule]

Asked in: MHT CET 2021 (23 Sep Shift 2)

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