({\cot h}^{- 1}x) equals. | MATH - HYPERBOLIC FUNCTIONS | SolveeIt

${\cot h}^{- 1}x$ equals.

$\frac{1}{2}\log\left( \frac{1 + x}{1 - x} \right)$

$\frac{1}{2}\log\left( \frac{x + 1}{x - 1} \right)$

$\frac{1}{2}\log\left( \frac{x - 1}{x + 1} \right)$

None of these

Answer

$\frac{1}{2}\log\left( \frac{x + 1}{x - 1} \right)$

Explanation

It is obvious.

Question: \({\cot h}^{- 1}x\) equals....