ExamBro
ExamBro
JEE Mains · Maths · STD 11 - 12. limits

यदि \(\alpha=\lim _{x \rightarrow 0^{+}}\left(\frac{e^{\sqrt{\tan x}}-e^{\sqrt{x}}}{\sqrt{\tan x}-\sqrt{x}}\right)\) और \(\beta=\lim _{x \rightarrow 0}(1+\sin x)^{\frac{1}{2} \cot x}\) द्विघात समीकरण \(a x^2+b x-\sqrt{e}=0\) के मूल हैं, तो 12 \(\log _e(a+b)\) = ...........

  1. A \(4\)
  2. B \(6\)
  3. C \(5\)
  4. D \(1\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(6\)

Step-by-step Solution

Detailed explanation

\( \alpha=\lim _{x \rightarrow 0^{+}} e^{\sqrt{x}} \frac{\left(e^{\sqrt{\tan x}-\sqrt{x}}-1\right)}{\sqrt{\tan x}-\sqrt{x}} \) \( =1 \) \( \beta=\lim _{x \rightarrow 0}(1+\sin x)^{\frac{1}{2} \cot x} \) \( =e^{1 / 2} \) \( x^2-(1+\sqrt{e})+\sqrt{e}=0 \) \( a x^2+b x-\sqrt{e}=0\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app