$\lim _{x \rightarrow 1} \frac{\tan \left(x^{2}-1\right)}{x-1}$ का मान ज्ञात कीजिए।

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

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