જો $f(x) = \cot^{-1} \left( \frac{3x - x^3}{1 - 3x^2} \right)$ અને $g(x) = \cos^{-1} \left( \frac{1 - x^2}{1 + x^2} \right)$ હોય,તો $0 < a < \frac{1}{\sqrt{3}}$ માટે $\lim_{x \to a} \frac{f(x) - f(a)}{g(x) - g(a)}$ ની કિંમત શોધો.

  • A
    $\frac{3}{2(1 + a^2)}$
  • B
    $\frac{3}{2(1 + x^2)}$
  • C
    $\frac{3}{2}$
  • D
    $-\frac{3}{2}$

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