$\int \frac{1}{(x^2 - 1)\sqrt{x^2 + 1}} \, dx = $

  • A
    $\frac{1}{2\sqrt{2}} \log \left\{ \frac{\sqrt{1 + x^2} + x\sqrt{2}}{\sqrt{1 + x^2} - x\sqrt{2}} \right\} + c$
  • B
    $\frac{1}{2\sqrt{2}} \log \left\{ \frac{\sqrt{1 + x^2} - \sqrt{2}}{\sqrt{1 + x^2} + \sqrt{2}} \right\} + c$
  • C
    $\frac{1}{2\sqrt{2}} \log \left\{ \frac{\sqrt{1 + x^2} - x\sqrt{2}}{\sqrt{1 + x^2} + x\sqrt{2}} \right\} + c$
  • D
    આમાંથી કોઈ નહીં

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જો $\int {\frac{{\csc^2 x}}{{{{\left( {\csc x + \cot x} \right)}^{\frac{9}{2}}}}}\,dx} = {\left( {\csc x - \cot x} \right)^{\frac{7}{2}}}\left( {\frac{1}{\alpha } + \frac{{{{\left( {\csc x - \cot x} \right)}^2}}}{{11}}} \right) + C$ (જ્યાં $C$ એ સંકલનનો અચળાંક છે અને $\alpha \in N$),તો $\alpha$ ની કિંમત શોધો.

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