﻿功能:求反正割值

格式:Asec(z)

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

例子:

b =
[ 62.25866957672810     85.38304520090250     36.22291909354870
  6.161043330170700     25.29734807335650     21.17483956794010
  78.45216052534620     16.36536164040000     2.606075817070010
  41.76930898882880     97.87502288719410     55.48773978626720 ]

a=asec(b)//回车后得到如下结果
a =
[ 1.554733616013040     1.559084131937030     1.543185988051840
  1.407764905740780     1.531256189423750     1.523552895080410
  1.558049360048830     1.509653568898360     1.176976429303600
  1.546853015841830     1.560579037750710     1.552773351920790 ]