﻿功能:求方阵行列式.采用高斯列选主元素法求解

格式:Det(a)

说明:a为方阵

例子:

a =
[ 51.6294787412647    12.5408527499721    15.3530106485603    17.5754632882660
  81.7558246114086    93.1908045398029    40.6917573142293    4.95531652353486
  70.2481525345930    34.6054522016111    22.3746643505873    52.3663844691433
  3.16300331762200    26.8575003961369    68.7949702464021    73.3370534951506 ]
b=det(a)//假如上面已经存在a这个矩阵,执行本条命令后得到如下的结果
b =
[-8707656.05672557 ]