| Group: | Mathematical Functions |
| Topic: | Trigonometric Functions |
| See also: | acos acosh asin asinh atan atan2 cos cosh sin sinh tan tanh |
| Function: | atanh | |
| Description: | Returns the inverse hyperbolic tangent of the elements of an array. |
| Usage: | z = atanh(x) | |
| Input: | ||
| x | array | |
| Output: | ||
| z | array | |
x = #(0, 1/2)~#(1/3, tanh(4))~#(1, 2) atanh(x)
Content of atanh [1,] 0 0.34657 +INF [2,] 0.54931 4 -NAN