Returns the hyperbolic arctangent(s) of the specified number(s) in radians.

Syntax

atanh( number, … )

number:: (Decimal) A number or array of numbers, the hyperbolic arctangent(s) of which will be returned.

Returns

Decimal

Notes

This function can be used with any value.

Examples

atanh(.9) returns 1.4722194895832203