यदि $\sqrt{\frac{y}{x}}+\sqrt{\frac{x}{y}}=2$ है,तो $\frac{dy}{dx}$ का मान ज्ञात कीजिए।

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

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