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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: Eigenvector of 2*2 symmetric and equal diagoal elements
Replies: 5 Last Post: May 27, 2012 4:12 PM

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David

Posts: 7
Registered: 5/26/12

Eigenvector of 2*2 symmetric and equal diagoal elements
Posted: May 26, 2012 11:46 AM

Plain Text

Hi,

I am trying to find the eigenvalue and eigenvector of a 2*2 matrix which is symmetric and have same diagonal elements. Even though I am changing the values of the matrix, the eigenvector remains same, only eigenvalues are changing. Why is this happening.

a = [0.8 0.4;0.4 0.8];
[d v] = eigs(a)

d =

0.7071 -0.7071
0.7071 0.7071

v =

1.2000 0
0 0.4000

The eigenvector is always the same....

Thanks in advance

Date

Subject

Author

5/26/12