﻿功能:求对象的反双曲正切

格式:Atanh(a)

说明:a为数据或者矩阵变量,当为矩阵变量时,返回值是对矩阵变量里的每一个数据进行Atanh操作.

注意:假如a里面的一数据为d,如果(d+1)/(1-d)≤0,则返回的数据是有问题的.

例子:

a =
[ 0.09271294744345    0.20050751054683    0.18450285898731
  0.24664230190526    0.36547455278480    0.37177797377658
  0.35744036913730    0.08084436416665    0.21189046474727
  0.28840551305953    0.17338139408891    0.31929183812779 ]
b=Atanh(a)//回车得到如下结果
b =
[ 0.09297996988535    0.20326126682448    0.18664026050801
  0.25183445597219    0.38318995631679    0.39048465978468
  0.37394825036431    0.08102118592457    0.21514985129927
  0.29682624404834    0.17515076458316    0.33085835728057 ]