સમીકરણ $\sin^{2} x + \cos^{2} y = 1$ માટે $\frac{dy}{dx}$ શોધો.

  • A
    $\frac{\sin 2x}{\sin 2y}$
  • B
    $-\frac{\sin 2x}{\sin 2y}$
  • C
    $\frac{\cos 2x}{\cos 2y}$
  • D
    $-\frac{\cos 2x}{\cos 2y}$

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