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AP EAMCET · Maths · Limits

If \(f(x)=\frac{\sqrt{\pi}-\sqrt{\operatorname{Cos}^{-1} x}}{\sqrt{1+x}}\) for \(x>-1\) then \(\lim _{x \rightarrow-1^{+}} f(x)=\)

  1. A \(\sqrt{\frac{\pi}{2}}\)
  2. B \(\sqrt{\frac{2}{\pi}}\)
  3. C \(\sqrt{2 \pi}\)
  4. D \(\frac{1}{\sqrt{2 \pi}}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\frac{1}{\sqrt{2 \pi}}\)

Step-by-step Solution

Detailed explanation

\(\lim _{x \rightarrow-1^{+}} f(x) = \lim _{x \rightarrow-1^{+}} \frac{\sqrt{\pi}-\sqrt{\operatorname{Cos}^{-1} x}}{\sqrt{1+x}}\) Apply L'Hôpital's Rule (\(\frac{0}{0}\) form):…