જો $\sqrt{y-\sqrt{y-\sqrt{y-\ldots \infty}}} = \sqrt{x+\sqrt{x+\sqrt{x+\ldots \infty}}}$ હોય,તો $\frac{dy}{dx} = $

  • A
    $\frac{y+x+1}{y-x+1}$
  • B
    $\frac{y-x-1}{y-x+1}$
  • C
    $\frac{y-x+1}{y-x-1}$
  • D
    $1$

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