$\int \frac{dx}{x[(\log x)^2 + 4\log x - 1]} = $

  • A
    $\frac{1}{2\sqrt{5}}\log \left[ \frac{\log x + 2 - \sqrt{5}}{\log x + 2 + \sqrt{5}} \right] + c$
  • B
    $\frac{1}{\sqrt{5}}\log \left[ \frac{\log x + 2 - \sqrt{5}}{\log x + 2 + \sqrt{5}} \right] + c$
  • C
    $\frac{1}{2\sqrt{5}}\log \left[ \frac{\log x + 2 + \sqrt{5}}{\log x + 2 - \sqrt{5}} \right] + c$
  • D
    $\frac{1}{\sqrt{5}}\log \left[ \frac{\log x + 2 + \sqrt{5}}{\log x + 2 - \sqrt{5}} \right] + c$

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