$\int \frac{x+1}{x(1+x e^x)} d x=$

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

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