x =[ 1 0.5 0.333 2； 2 1 0.5 3; 3 2 1 4; 0.5 0.333 0.25 1];

[V，D] = eig(x)

Result feature vector V =

Column 1 to 2

-0.27864375286945 -0.3600 1820429992

-0.48256559939090 0.5942 1909 155474

-0.8 135688 1245238 -0.702659 17977345

-0. 166 1 140833 1673 0. 15349475849236

Columns 3 to 4

-0.24958450922805+0.0503373949 1898 I-0.2495845545-0.249584

-0.000263808 120 18+0.42636425385990 I-0.0002638

0.849593697 18747 0.849593697 18747

-0.02533906303372-0. 175885344602 16i-0.02533906303372+0. 175885344602 16i

Eigenvalue D =

Column 1 to 2

4.030498 16 18274 1 0

0 -0.02804 122535202

0 0

0 0

Columns 3 to 4

0 0

0 0

-0.00 122846823770+0.3534456348004 I 0

0-0.00 12284682 3770-0.465364866