Difference between revisions of "Arctanh"
From specialfunctionswiki
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| + | The inverse hyperbolic tangent function $\mathrm{arctanh}$ is the [[inverse function]] of the [[tanh|hyperbolic tangent]] function. It may be defined by | ||
| + | $$\mathrm{arctanh}(z) = \dfrac{\log(1+z)}{2} - \dfrac{\log(1-x)}{2},$$ | ||
| + | where $\log$ denotes the [[logarithm]]. | ||
<div align="center"> | <div align="center"> | ||
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=Properties= | =Properties= | ||
| − | [[Derivative of Legendre chi]] | + | [[Derivative of arctanh]] <br /> |
| + | [[Derivative of Legendre chi]] <br /> | ||
| + | |||
| + | =See also= | ||
| + | [[Arctan]] <br /> | ||
| + | [[Tanh]] <br /> | ||
| + | [[Tangent]] <br /> | ||
{{:Inverse hyperbolic trigonometric functions footer}} | {{:Inverse hyperbolic trigonometric functions footer}} | ||
[[Category:SpecialFunction]] | [[Category:SpecialFunction]] | ||
Revision as of 00:47, 16 September 2016
The inverse hyperbolic tangent function $\mathrm{arctanh}$ is the inverse function of the hyperbolic tangent function. It may be defined by $$\mathrm{arctanh}(z) = \dfrac{\log(1+z)}{2} - \dfrac{\log(1-x)}{2},$$ where $\log$ denotes the logarithm.
Plot of $\mathrm{arctanh}$ on $(-1,1)$.
Domain coloring of analytic continuation of $\mathrm{arctanh}$.
Properties
Derivative of arctanh
Derivative of Legendre chi
