${\tan ^{ - 1}}\left( \frac{{2x}}{{1 - {x^2}}} \right)$ નું ${\sin ^{ - 1}}\left( \frac{{2x}}{{1 + {x^2}}} \right)$ ની સાપેક્ષ વિકલન સહગુણક શોધો.

  • A
    $1$
  • B
    $-1$
  • C
    $0$
  • D
    આમાંથી કોઈ નહીં

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જો $k \le \sin^{-1}x + \cos^{-1}x + \tan^{-1}x \le K$ હોય,તો

જો $0 < x < \frac{1}{\sqrt{2}}$ અને $\frac{\sin ^{-1} x}{\alpha}=\frac{\cos ^{-1} x}{\beta}$ હોય,તો $\sin \left(\frac{2 \pi \alpha}{\alpha+\beta}\right)$ ની કિંમત $......$ છે.

જો $\tan^{-1} 2x + \tan^{-1} 3x = \frac{\pi}{4}$ હોય,તો $x =$

$(\tan ^{-1} x)^2+(\cot ^{-1} x)^2=\frac{5 \pi^2}{8} \Rightarrow x=$

$\cot ^{-1}\left(\frac{\sqrt{1+x^2}-1}{x}\right) = $ . . . . . .

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