यदि $x^{3}+y^{3}-3 a x y=0$ है,तो $\frac{d y}{d x}$ का मान क्या होगा?

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

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