$\int \frac{dx}{x^3+3x^2+2x} = $

  • A
    $\log |x| + \log \left|\frac{x+2}{x+1}\right| + c$
  • B
    $\log |x| - \log |x+1| + \log |x+2| + c$
  • C
    $\frac{1}{2}[\log |x| + \log |x+1| + \log |x+2|] + c$
  • D
    $\frac{1}{2} \log \left(\frac{|x^2+2x|}{(x+1)^2}\right) + c$

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