OpenOffice3.org Calc 3. Mathematical Functions
ATANH(Number) Function
Calculates the hyperbolic arc tangent of
the argument “Number”. This function returns a numeric value greater than -2,7
and less than 2,7. The argument “Number” can take a numeric value greater than
-1 and less than 1. For example:
=ATANH(0 ) Returns 0.
=ATANH(0,8 ) Returns 1,099.
=ATANH(-0,3 ) Returns -0,310.