यदि $\Delta(x) = \begin{vmatrix} e^x & -1 \\ \sin x - 1 & 1 \end{vmatrix}$ है,तो $\lim_{x \rightarrow 0} \frac{\Delta(x)}{x} = $

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

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सीमा का मान ज्ञात कीजिए: $\lim _{x \rightarrow 0} \frac{\sqrt{1+x \sin x}-\sqrt{\cos x}}{\tan ^2 \frac{x}{2}}$

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यदि $a = \lim_{n \rightarrow \infty} \frac{1+2+3+\ldots+n}{n^2}$ और $b = \lim_{n \rightarrow \infty} \frac{1^2+2^2+3^2+\ldots+n^2}{n^3}$ है,तो

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

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