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

  • A
    $\frac{y^2 - x}{2y^3 - 2xy - 1}$
  • B
    $\frac{y^2 - x}{2y^3 - 2xy + 1}$
  • C
    $\frac{y^2 - x}{2y^3 + 2xy - 1}$
  • D
    $\frac{y^2 + x}{2y^3 - 2xy - 1}$

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જો ${y^x} + {x^y} = {a^b}$ હોય,તો $\frac{dy}{dx} = $

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