Investment Studio > Expressions > Functions > Math & Trig > ATANH

float atanh(float argument)

Returns the inverse hyperbolic tangent of the argument. The argument must be in the range ]-1, 1[.

The inverse hyperbolic tangent is the number such that tanh(number) = argument.

Example

=atanh(0.5)

returns 0.549306144334055. You can verify that

=tanh(0.549306144334055)

is 0.5.

See also acosh, asinh, tanh.