यदि ${x^2}{e^y} + 2xy{e^x} + 13 = 0$ है,तो $\frac{dy}{dx} = $

  • A
    ${{2x{e^{y - x}} + 2y(x + 1)} \over {x(x{e^{y - x}} + 2)}}$
  • B
    ${{2x{e^{x - y}} + 2y(x + 1)} \over {x(x{e^{y - x}} + 2)}}$
  • C
    $ - {{2x{e^{y - x}} + 2y(x + 1)} \over {x(x{e^{y - x}} + 2)}}$
  • D
    इनमें से कोई नहीं

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