$\int \frac{x}{\sqrt{x^2-2x+5}} dx=$

  • A
    $\sqrt{x^2-2x+5}+\ln|x-1+\sqrt{x^2-2x+5}|+c$
  • B
    $\frac{1}{2} \sqrt{x^2-2x+5}+\ln|x-1+\sqrt{x^2-2x+5}|+c$
  • C
    $2 \sqrt{x^2-2x+5}+\ln|x-1+\sqrt{x^2-2x+5}|+c$
  • D
    $\sqrt{x^2-2x+5}-\ln|x-1+\sqrt{x^2-2x+5}|+c$

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