$\lim _{x \rightarrow \infty}\left[\frac{8 x^2+5 x+3}{2 x^2-7 x-5}\right]^{\frac{4 x+3}{8 x-1}} = $

  • A
    $4$
  • B
    $\frac{1}{2}$
  • C
    $2$
  • D
    $\sqrt{2}$

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मान लीजिए कि $m$ और $n$ दो धनात्मक पूर्णांक हैं जो $1$ से बड़े हैं। यदि $\lim_{\alpha \rightarrow 0} \left( \frac{e^{\cos(\alpha^n)} - e}{\alpha^m} \right) = -\left( \frac{e}{2} \right)$ है,तो $\frac{m}{n}$ का मान ज्ञात कीजिए।

मान लीजिए $x_{n}=\left(1-\frac{1}{3}\right)^{2}\left(1-\frac{1}{6}\right)^{2}\left(1-\frac{1}{10}\right)^{2} \ldots \left(1-\frac{1}{\frac{n(n+1)}{2}}\right)^{2}, n \geq 2$ है। तो, $\lim _{n \rightarrow \infty} x_{n}$ का मान ज्ञात कीजिए।

यदि $0 \leq x \leq \pi / 2$ है,तो $\lim _{x \rightarrow a} \frac{|2 \cos x-1|}{2 \cos x-1}$

$\lim _{y \rightarrow 1}\left(\frac{1}{y^2-1}-\frac{2}{y^4-1}\right)=$

$\lim _{x \rightarrow \infty}\left(\frac{2 x^2+3 x+4}{x^2-3 x+5}\right)^{\frac{3|x|+1}{2|x|-1}} = $

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