यदि ${x^3} + 8xy + {y^3} = 64$ है,तो $\frac{dy}{dx} = $

  • A
    $-\frac{3x^2 + 8y}{8x + 3y^2}$
  • B
    $\frac{3x^2 + 8y}{8x + 3y^2}$
  • C
    $\frac{3x + 8y^2}{8x^2 + 3y}$
  • D
    इनमें से कोई नहीं

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