मान लीजिए $f(x) = \lim_{y \to 0} \frac{(1 - \cos(xy))\tan(xy)}{y^3}$. तो समीकरण $f(x) = \sin x, x \in R$ के हलों की संख्या क्या है?

  • A
    $0$
  • B
    $2$
  • C
    $3$
  • D
    $1$

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

यदि $\mathop {\lim }\limits_{x \to 5} \frac{{{x^k} - {5^k}}}{{x - 5}} = 500$ है,तो $k$ का धनात्मक पूर्णांक मान ज्ञात कीजिए।

$\lim _{n \rightarrow \infty} n\left(\sqrt{n^2+9}-n\right)=$

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