$\mathop {\lim }\limits_{x \to \infty } \left( {\frac{{{x^2} + bx + 4}}{{{x^2} + ax + 5}}} \right)$ का मान है

  • A
    $b/a$
  • B
    $1$
  • C
    $0$
  • D
    $4/5$

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$\mathop {\lim }\limits_{n \to \infty } \left[ {\frac{1}{{1 - {n^2}}} + \frac{2}{{1 - {n^2}}} + \frac{3}{{1 - {n^2}}} + \dots + \frac{n}{{1 - {n^2}}}} \right] =$

मान लीजिए $A = \lim_{x \rightarrow 0^{+}} \left(1 + \tan^2 \sqrt{x}\right)^{\frac{1}{2x}}$,तो $\log_{e} A = $

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$\mathop {\lim }\limits_{n \to \infty } \,\frac{{\sum\limits_{r = 0}^n {{{\tan }^{ - 1}}\left( {1 + r + {r^2}} \right)} }}{n}$ का मान ज्ञात कीजिए।

वह द्विघात समीकरण जिसके मूल $m$ और $n$ हैं,जहाँ $m = \lim_{x \rightarrow 0} \frac{x \log(1+2x)}{x \tan x}$ और $n = \lim_{x \rightarrow 0} \frac{\log x + \log(\frac{1+x}{x})}{x}$ है,वह है

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