MCQ
$\sec ^{-1}\left[\frac{x^2+1}{x^2-1}\right]$ का अवकल है :
  • A
    $\frac{2}{\left\{1+x^2\right\}}$
  • $\frac{-2}{\left(1+x^2\right)}$
  • C
    $\frac{1}{\left(1+x^2\right)}$
  • D
    $\frac{-1}{\left(1+x^2\right)}$

Answer

Correct option: B.
$\frac{-2}{\left(1+x^2\right)}$
(B)

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