MCQ
यदि $-1< x<1$, तब $2 \tan ^{-1} x=$
  • A
    $\tan ^{-1} 2 x$
  • $\tan ^{-1} \frac{2 x}{1-x^2}$
  • C
    $\tan ^{-1} \frac{2 x}{1+x^2}$
  • D
    $\cot ^{-1} \frac{2}{x}$

Answer

Correct option: B.
$\tan ^{-1} \frac{2 x}{1-x^2}$
B

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