यदि $\int_{\pi /2}^x \sqrt{3 - 2\sin^2 u} \,du + \int_0^y \cos t \,dt = 0$ है,तो $\frac{dy}{dx} = $

  • A
    $\frac{\sqrt{3 - 2\sin^2 x}}{\cos y}$
  • B
    $-\frac{\sqrt{3 - 2\sin^2 x}}{\cos y}$
  • C
    $\sqrt{3 - 2\sin^2 x} + \cos y$
  • D
    इनमें से कोई नहीं

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