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JEE Mains · Maths · STD 11 - 12. limits

माना कि \( f:R\rightarrow(0,\infty) \) एक दो बार अवकलनीय फलन है इस प्रकार कि \( f(3)=18, \) \( f^{\prime}(3)=0 \) और \( f^{\prime\prime}(3)=4 \)। तब \( \lim_{x\rightarrow1}(\log_{e}(\frac{f(x+2)}{f(3)})^{\frac{18}{(x-1)^{2}}}) \) = ........... है।

  1. A 1
  2. B 9
  3. C 2
  4. D 18
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Answer & Solution

Correct Answer

(C) 2

Step-by-step Solution

Detailed explanation

Let \( T=\lim_{x\rightarrow1}(\frac{f(x+2)}{f(3)})^{\frac{18}{(x-1)^{2}}} \) ; \( 1^{\infty} \) form \( \Rightarrow T=e^{\lim_{x\rightarrow1}\frac{18}{(x-1)^{2}}(\frac{f(x+2)-f(3)}{f(3)})} \)…
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