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{{alias}}( x )
Computes the inverse hyperbolic cotangent of a number.
The domain of the inverse hyperbolic cotangent is the union of the intervals
(-inf,-1] and [1,inf).
If provided a value on the open interval (-1,1), the function returns `NaN`.
Parameters
----------
x: number
Input value.
Returns
-------
y: number
Inverse hyperbolic cotangent (in radians).
Examples
--------
> var y = {{alias}}( 2.0 )
~0.5493
> y = {{alias}}( 0.0 )
NaN
> y = {{alias}}( 0.5 )
NaN
> y = {{alias}}( 1.0 )
Infinity
> y = {{alias}}( NaN )
NaN
See Also
--------
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