$\int \left( {1 + x - \frac{1}{x}} \right){e^{x + \frac{1}{x}}}\,dx = $

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

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