यदि $\mathop {\lim }\limits_{x \to 2} \frac{{{x^n} - {2^n}}}{{x - 2}} = 80$,जहाँ $n$ एक धनात्मक पूर्णांक है,तो $n = $

  • A
    $3$
  • B
    $5$
  • C
    $2$
  • D
    इनमें से कोई नहीं

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मान लीजिए $[.]$ महत्तम पूर्णांक फलन को दर्शाता है। कथन $(A) : \lim_{x \rightarrow \infty} \frac{[x]}{x} = 1$. कारण $(R) : f(x) = x - 1, g(x) = [x], h(x) = x$ और $\lim_{x \rightarrow \infty} \frac{f(x)}{x} = \lim_{x \rightarrow \infty} \frac{h(x)}{x} = 1$.

$\mathop {\lim }\limits_{x \to 0} \frac{{x({2^x} - 1)}}{{1 - \cos x}} = $

$\mathop {\lim }\limits_{x \to 0} \frac{{{{(1 + x)}^{1/x}} - e}}{x}$ का मान ज्ञात कीजिए।

Difficult
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$\mathop {\lim }\limits_{x \to 2} \frac{{\sqrt {1 + \sqrt {2 + x} } - \sqrt 3 }}{{x - 2}}$ का मान है

$\operatorname{Lim}_{n \rightarrow \infty} \frac{1+2-3+4+5-6+\ldots+(3n-2)+(3n-1)-3n}{\sqrt{2n^4+4n+3}-\sqrt{n^4+5n+4}}$ का मान ज्ञात कीजिए।

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