જો $y = \sec^{-1}\left( \frac{\sqrt{x} + 1}{\sqrt{x} - 1} \right) + \sin^{-1}\left( \frac{\sqrt{x} - 1}{\sqrt{x} + 1} \right)$ હોય,તો $\frac{dy}{dx} = $

  • A
    $0$
  • B
    $\frac{1}{\sqrt{x} + 1}$
  • C
    $1$
  • D
    આમાંથી કોઈ નહીં

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