$\int \frac{x^{2}+1}{x^{4}+x^{2}+1} dx$ का मान क्या है?

  • A
    $\frac{1}{\sqrt{3}} \tan ^{-1}\left\{\frac{x-1/x}{\sqrt{3}}\right\}+C$
  • B
    $\frac{1}{2 \sqrt{3}} \log \left\{\frac{(x-1/x)-\sqrt{3}}{(x-1/x)+\sqrt{3}}\right\}+C$
  • C
    $\tan ^{-1}\left(\frac{x+1/x}{\sqrt{3}}\right)+C$
  • D
    $\tan ^{-1}\left(\frac{x-1/x}{\sqrt{3}}\right)+C$

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