यदि $\lim _{x \rightarrow 0} \frac{\left(e^{k x}-1\right) \sin k x}{x^{2}}=4$ है,तो $k$ का मान ज्ञात कीजिए।

  • A
    $2$
  • B
    $-2$
  • C
    $\pm 2$
  • D
    $\pm 4$

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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।

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यदि $L = \lim_{x^2 \to a} \frac{b - \cos(x^2 - a)}{(x^2 - a) \sin(c(x^2 - a))}$ एक शून्येतर परिमित मान $(a > 0)$ है,तो:

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