acosh(x) asinh(x) atanh(x)
NA
s) are allowed.
Numeric arguments must be at least 1 for
acosh
and must be less than 1 in absolute value for
atanh
,
otherwise NA is returned and a warning is given.
These functions are part of the
Math
group
of generic functions.
See section 5.1.5 of Becker, Chambers and Wilks for further details on domains and branch cuts in the case of complex arguments.
plot(acosh(sort(abs(rnorm(500))+1))) plot(asinh(sort(rnorm(500)))) plot(atanh(seq(-1, 1, len=500)))