﻿功能:求反双曲正割值

格式:Asech(z)

说明:求z的反双曲正割值,按定义Asech(z)={Acosh<矩阵运算\Acosh>}(1/z).z可以为矩阵(此时对矩阵里的每个元素求反双曲正割),也可以为数字(此时对本数字求反双曲正割)

例子:

b =
[ 0.434994564128571     0.648561094723903     0.992225544989214
  0.669613770986727     0.689008104470096     0.636164162604215
  0.871843400817291     0.290583205544661     0.928670651711836
  0.403033647873920     0.158982726353678     0.533521447113492 ]

a=Asech(b)//回车执行命令后得到如下的值
a =
[ 1.474503540573210     0.998973230560659     0.125101238214784
  0.956495278585756     0.917586465586696     1.024155606716860
  0.535777092286070     1.907201220055480     0.389472524461110
  1.558549534746340     2.525727278169130     1.241161502015360 ]