﻿功能:将方阵化为上H(Hessenberg)阵

格式:hess(a)

说明:a为方阵变量

例子:

a=
 [ 5.30905494713646   3.82213015287282   8.39569373447248
   3.50344744674091   4.22719609189182   2.22566123689788
   8.13818784343926   2.84649209717591   8.88897210773498 ]
hess(a)//回车得到如下结果
ans =
 [ 5.30905494713646   10.0411008426395   3.82213015287282
   8.13818784343926   10.1143721183846   2.84649209717591
   0                 -0.308737355923731  3.0017960812422  ]