यदि $3\sin (xy) + 4\cos (xy) = 5$ है,तो $\frac{dy}{dx} = $

  • A
    $-\frac{y}{x}$
  • B
    $\frac{3\sin (xy) + 4\cos (xy)}{3\cos (xy) - 4\sin (xy)}$
  • C
    $\frac{3\cos (xy) + 4\sin (xy)}{4\cos (xy) - 3\sin (xy)}$
  • D
    इनमें से कोई नहीं

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