exm040402.m

来自「matlab电子书籍」· M 代码 · 共 14 行

clear all
A=[11 12 13;14 15 16;17 18 19];		
PA=poly(A)  								
PPA=poly2str(PA,'s') 

s=eig(A)
r=roots(PA) 

n = length(PA);								
AA = diag(ones(1,n-2,class(PA)),-1);	
AA(1,:) = -PA(2:n) ./ PA(1);				
AA
sr = eig(AA)