系统特征根_20160204

Matlab进行验证：

%System characteristic equation
den1 = [ 1 3 12 24 32 48];
den2 = [ 1 4 -4 4 -7 -8 10 ];
den3 = [ 1 3  12 20 35 25 ];
%Calculate system characteristic roots
p1 = roots( den1 )
p2 = roots( den2 )
p3 = roots( den3 )

验证结果：

>> Roots

p1 =

  -2.0000 + 0.0000i
  -0.5000 + 2.3979i
  -