$\int \frac{dx}{(x + 1)^2 (x^2 + 1)} =$

  • A
    $\log_e \sqrt{x + 1} + \frac{1}{2} \log_e \sqrt{x^2 + 1} - \frac{1}{x + 1} + C$
  • B
    $\log_e \sqrt{x + 1} - \frac{1}{2} \log_e \sqrt{x^2 + 1} - \frac{1}{2(x + 1)} + C$
  • C
    $\frac{1}{2} \log_e \sqrt{x + 1} - \frac{1}{4} \log_e \sqrt{x^2 + 1} + \frac{1}{2(x + 1)} + C$
  • D
    $\frac{1}{4} \log_e \sqrt{x + 1} + \frac{1}{2} \log_e \sqrt{x^2 + 1} + \frac{1}{x + 1} + C$

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