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

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

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જો $\int \frac{2 e^x+3 e^{-x}}{3 e^x+4 e^{-x}} d x=A x+B \log \left(3 e^{2 x}+4\right)+C$ હોય,તો $A$ અને $B$ ની કિંમતો અનુક્રમે શું થાય? (જ્યાં $C$ એ સંકલનનો અચળાંક છે.)

$\int \frac{6x+5}{\sqrt{6+x-2x^2}} dx =$

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