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:

  • A
    $L = 2, b = 1, c = 1$
  • B
    $L = \frac{1}{2}, b = 1, c = 1$
  • C
    $L = 4, b = -1, c = -1$
  • D
    $L = \frac{1}{4}, b = -1, c = -1$

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यदि $f(x) = \frac{x(a^x - 1)}{1 - \cos x}$ और $g(x) = \frac{x(1 - a^x)}{a^x(\sqrt{1 - x^2} - \sqrt{1 + x^2})}$ है,तो $\lim_{x \to 0} (f(x) - g(x)) = $

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