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JEE Mains · Maths · STD 11 - 12. limits

यदि \(\alpha\), समीकरण \(p ( x )= x ^{2}- x -2=0\) का धनात्मक मूल है, तो \(\lim _{ x \rightarrow \alpha^{+}} \frac{\sqrt{1-\cos ( p ( x ))}}{ x +\alpha-4}\) बराबर है

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

Answer & Solution

Correct Answer

(A) \(\frac{3}{\sqrt{2}}\)

Step-by-step Solution

Detailed explanation

\(x^{2}-x-2=0\) roots are \(2 -1\) \(\Rightarrow \lim _{x \rightarrow 2^{+}} \frac{\sqrt{1-\cos \left(x^{2}-x-2\right)}}{(x-2)}\) \(=\lim _{x \rightarrow 2^{+}} \frac{\sqrt{2 \sin ^{2} \frac{\left(x^{2}-x-2\right)}{2}}}{(x-2)}\)…
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