यदि $\int \frac{1}{x^4+8 x^2+9} d x = \frac{1}{k} \left[ \frac{1}{\sqrt{14}} \tan^{-1}(f(x)) - \frac{1}{\sqrt{2}} \tan^{-1}(g(x)) \right] + c$ है, तो $\sqrt{\frac{k}{2} + f(\sqrt{3}) + g(1)} =$

  • A
    $3-2 \sqrt{2}$
  • B
    $\sqrt{2}-1$
  • C
    $\sqrt{3}+2 \sqrt{2}$
  • D
    $\sqrt{2}+1$

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यदि $\int \frac{x^2-x+2}{x^2+x+2} d x=x-\log (f(x))+\frac{2}{\sqrt{7}} \operatorname{Tan}^{-1}(g(x))+c$ है,तो $f(-1)+\sqrt{7} g(-1)=$

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