$\int \frac{x^5}{x^2+1} \, dx =$

  • A
    $\frac{x^4}{4} + \frac{x^3}{3} - \tan^{-1} x + c$
  • B
    $\frac{x^4}{4} - \frac{x^2}{2} + \frac{1}{2} \log(x^2+1) + c$
  • C
    $\frac{x^4}{4} + \frac{x^3}{3} + \tan^{-1} x + c$
  • D
    $\frac{x^4}{4} + \frac{x^2}{2} - \frac{1}{2} \log(x^2+1) + c$

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