$i \log \left( \frac{x - i}{x + i} \right)$ એ $(x \in R)$ માટે કોના બરાબર છે?

  • A
    $\pi + 2 \tan^{-1} x$
  • B
    $\pi - 2 \tan^{-1} x$
  • C
    $-\pi + 2 \tan^{-1} x$
  • D
    $-\pi - 2 \tan^{-1} x$

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$\sqrt{a \pm i b}=x \pm i y, x>0$ લઈને,જો આપણને $\frac{\sqrt{21+12 \sqrt{2} i}}{\sqrt{21-12 \sqrt{2} i}}=a+i b$ મળે,તો $\frac{b}{a}=$

$\sqrt[4]{17 + 12\sqrt{2}} = $

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કિંમત શોધો: $\frac{\sqrt{6 + 2\sqrt{3} + 2\sqrt{2} + 2\sqrt{6}} - 1}{\sqrt{5 + 2\sqrt{6}}}$

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