यदि $(a+bx) e^{\frac{y}{x}}=x$ है,तो $x^3 \frac{d^2 y}{d x^2}$ का मान ज्ञात कीजिए।

  • A
    $\left(y \frac{dy}{dx}-x\right)^2$
  • B
    $\left(x \frac{dy}{dx}-y\right)^2$
  • C
    $\left(x \frac{dy}{dx}+y\right)^2$
  • D
    $\left(y \frac{dy}{dx}+x\right)^2$

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