यदि $y = - \left( {{x^3} + \frac{{{x^6}}}{2} + \frac{{{x^9}}}{3} + \dots} \right)$ है,तो $x = $

  • A
    $(1 + {e^y})^{1/3}$
  • B
    $(1 - {e^y})^{1/3}$
  • C
    $(1 - {e^y})^{3}$
  • D
    $(e^y - 1)^{1/3}$

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