$\lim _{n \rightarrow \infty} \frac{3 \cdot 2^{n+1}-4 \cdot 5^{n+1}}{5 \cdot 2^{n}+7 \cdot 5^{n}}$ का मान ज्ञात कीजिए।

  • A
    $\frac{3}{5}$
  • B
    $-\frac{4}{7}$
  • C
    $-\frac{20}{7}$
  • D
    $0$

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$\mathop {\lim }\limits_{x \to \infty } \frac{{2{x^2} - 3x + 1}}{{{x^2} - 1}} = $

यदि $\lim _{x \rightarrow 0^{+}} x^2\left(\frac{e^{1 / x}-e^{-1 / x}}{e^{1 / x}+e^{-1 / x}}\right)=k$ और $\lim _{x \rightarrow 0^{-}} x^2\left(\frac{e^{1 / x}-e^{-1 / x}}{e^{1 / x}+e^{-1 / x}}\right)=l$ है,तो निम्नलिखित में से कौन सा सत्य है?

$\mathop {\lim }\limits_{x \to 1} [x] = $

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