Example 7. Find the
eigenvalues and eigenvectors of the matrix
.
Solution 7.
Find the characteristic polynomial and the eigenvalues.
![[Graphics:../Images/EigenvaluesMod_gr_291.gif]](../Images/EigenvaluesMod_gr_291.gif)
Investigate the eigen-pair ![]()
Introduce the free variables and find the eigenvector.
![[Graphics:../Images/EigenvaluesMod_gr_296.gif]](../Images/EigenvaluesMod_gr_296.gif)
Verify the eigenpair.
Investigate the eigen-pair ![]()
Introduce the free variables and find the eigenvector.
![[Graphics:../Images/EigenvaluesMod_gr_303.gif]](../Images/EigenvaluesMod_gr_303.gif)
Verify the eigenpair.
Investigate the eigen-pair ![]()
Introduce the free variables and find the eigenvector.
![[Graphics:../Images/EigenvaluesMod_gr_310.gif]](../Images/EigenvaluesMod_gr_310.gif)
Verify the eigenpair.
Investigate the eigen-pair ![]()
Introduce the free variables and find the eigenvector.
![[Graphics:../Images/EigenvaluesMod_gr_317.gif]](../Images/EigenvaluesMod_gr_317.gif)
Verify the eigenpair.
Investigate the eigen-pair ![]()
Introduce the free variables and find the eigenvector.
![[Graphics:../Images/EigenvaluesMod_gr_324.gif]](../Images/EigenvaluesMod_gr_324.gif)
Verify the eigenpair.
The five eigen-pairs are:
We can compare this with the results obtained using Mathematicas Eigensystem procedure.
(c) John H. Mathews 2004