$\mathop {\lim }\limits_{x \to 0} \frac{{\ln (\cos x)}}{{{x^2}}}$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $1$
  • C
    $\frac{1}{2}$
  • D
    $-\frac{1}{2}$

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