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JEE Mains · Maths · STD 11 - 12. limits

\(\lim _{h \rightarrow 0} 2\left\{\frac{\sqrt{3} \sin \left(\frac{\pi}{6}+h\right)-\cos \left(\frac{\pi}{6}+h\right)}{\sqrt{3 h}(\sqrt{3} \cosh -\sinh )}\right\}\) मान है

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

Correct Answer

(A) \(\frac{4}{3}\)

Step-by-step Solution

Detailed explanation

\(L=\lim _{h \rightarrow 0} 2\left(\frac{\sqrt{3}\left(\frac{1}{2} \cosh +\frac{\sqrt{3}}{2} \sinh \right)-\left(\frac{\sqrt{3}}{2} \cosh -\frac{\sinh }{2}\right)}{(\sqrt{3} h)(\sqrt{3})}\right)\) \(L=\lim _{h \rightarrow 0} \frac{4 \sinh }{3 h}\) \(\Rightarrow L=\frac{4}{3}\)
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