यदि ${e^y} + xy = e$ है,तो $x = 0$ पर क्रमित युग्म $\left( {\frac{{dy}}{{dx}},\frac{{{d^2}y}}{{d{x^2}}}} \right)$ का मान ज्ञात कीजिए।

  • A
    $\left( {\frac{1}{e}, - \frac{1}{{{e^2}}}} \right)$
  • B
    $\left( {\frac{1}{e}, \frac{1}{{{e^2}}}} \right)$
  • C
    $\left( { - \frac{1}{e},\frac{1}{{{e^2}}}} \right)$
  • D
    $\left( { - \frac{1}{e}, - \frac{1}{{{e^2}}}} \right)$

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यदि $ax^2 + 2hxy + by^2 + 2gx + 2fy + c = 0$ है,तो $\frac{dy}{dx} = $

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