ધારો કે $\int_\alpha^{\log _e 4} \frac{dx}{\sqrt{e^{x}-1}}=\frac{\pi}{6}$. તો $e^\alpha$ અને $e^{-\alpha}$ એ કયા સમીકરણના બીજ છે:

  • A
    $2 x^2-5 x+2=0$
  • B
    $x^2-2 x-8=0$
  • C
    $2 x^2-5 x-2=0$
  • D
    $x^2+2 x-8=0$

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સંકલન $\int_{\frac{\pi}{6}}^{\frac{\pi}{3}} \sec^{\frac{2}{3}} x \operatorname{cosec}^{\frac{4}{3}} x \, dx$ ની કિંમત શોધો.

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