यदि $\lim _{x \rightarrow \infty}\left(\left(\frac{e}{1-e}\right)\left(\frac{1}{e}-\frac{x}{1+x}\right)\right)^x=\alpha$ है,तो $\frac{\log _e \alpha}{1+\log _e \alpha}$ का मान ज्ञात कीजिए:

  • A
    $e$
  • B
    $e^{-2}$
  • C
    $e^2$
  • D
    $e^{-1}$

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दिए गए सीमा (limit) का मूल्यांकन करें: $\mathop {\lim }\limits_{x \to 0} \frac{\cos x}{\pi - x}$

यदि $\alpha, \beta$ द्विघात समीकरण $ax^2 + bx + c = 0$ के मूल हैं,तो $\lim_{x \to \alpha} \frac{1 - \cos(ax^2 + bx + c)}{(x - \alpha)^2}$ का मान ज्ञात कीजिए।

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$\lim _{x \rightarrow 0} \frac{\cos 4 x-4 \cos 2 x+3}{x^4} = $

$\mathop {\lim }\limits_{x \to - 1} \frac{{\sqrt \pi - \sqrt {{{\cos }^{ - 1}}x} }}{{\sqrt {x + 1} }}$ का मान ज्ञात कीजिए।

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