फलन $f(x) = \lim_{n \to \infty} \frac{x^{2n} - 1}{x^{2n} + 1}$ निम्नलिखित में से किस फलन के समान है?

  • A
    $g(x) = \text{sgn}(x - 1)$
  • B
    $h(x) = \text{sgn}(\tan^{-1}x)$
  • C
    $u(x) = \text{sgn}(|x| - 1)$
  • D
    $v(x) = \text{sgn}(\cot^{-1}x)$

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यदि $\mathop {\lim }\limits_{x \to \infty } {\left( {1 + \frac{a}{x} + \frac{b}{{{x^2}}}} \right)^{2x}} = {e^2}$ है,तो $a$ और $b$ के मान ज्ञात कीजिए।

माना कि $p = \mathop {\lim }\limits_{x \to 0^+} (1 + \tan^2 \sqrt{x})^{\frac{1}{2x}}$,तो $\log p = $ . . .

$\mathop {Limit}\limits_{x \to \infty } \,\frac{{{{\left( {{2^{{x^n}}}} \right)}^{\frac{1}{{{e^x}}}}}\,\, - \,\,{{\left( {{3^{{x^n}}}} \right)}^{\frac{1}{{{e^x}}}}}}}{{{x^n}}}\,$ (जहाँ $n \in N$) का मान है

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