Example 7.  Find the eigenvalues and eigenvectors of the matrix  [Graphics:Images/EigenvaluesMod_gr_289.gif].  

Solution 7.

Find the characteristic polynomial and the eigenvalues.

[Graphics:../Images/EigenvaluesMod_gr_290.gif]

[Graphics:../Images/EigenvaluesMod_gr_291.gif]

 

 

Investigate the eigen-pair  [Graphics:../Images/EigenvaluesMod_gr_292.gif]

[Graphics:../Images/EigenvaluesMod_gr_293.gif]


[Graphics:../Images/EigenvaluesMod_gr_294.gif]

Introduce the free variables and find the eigenvector.

[Graphics:../Images/EigenvaluesMod_gr_295.gif]

[Graphics:../Images/EigenvaluesMod_gr_296.gif]

 

 

Verify the eigenpair.

[Graphics:../Images/EigenvaluesMod_gr_297.gif]


[Graphics:../Images/EigenvaluesMod_gr_298.gif]

Investigate the eigen-pair  [Graphics:../Images/EigenvaluesMod_gr_299.gif]

[Graphics:../Images/EigenvaluesMod_gr_300.gif]


[Graphics:../Images/EigenvaluesMod_gr_301.gif]

Introduce the free variables and find the eigenvector.

[Graphics:../Images/EigenvaluesMod_gr_302.gif]

[Graphics:../Images/EigenvaluesMod_gr_303.gif]

 

 

Verify the eigenpair.

[Graphics:../Images/EigenvaluesMod_gr_304.gif]


[Graphics:../Images/EigenvaluesMod_gr_305.gif]

Investigate the eigen-pair  [Graphics:../Images/EigenvaluesMod_gr_306.gif]

[Graphics:../Images/EigenvaluesMod_gr_307.gif]


[Graphics:../Images/EigenvaluesMod_gr_308.gif]

Introduce the free variables and find the eigenvector.

[Graphics:../Images/EigenvaluesMod_gr_309.gif]

[Graphics:../Images/EigenvaluesMod_gr_310.gif]

 

 

Verify the eigenpair.

[Graphics:../Images/EigenvaluesMod_gr_311.gif]


[Graphics:../Images/EigenvaluesMod_gr_312.gif]

Investigate the eigen-pair  [Graphics:../Images/EigenvaluesMod_gr_313.gif]

[Graphics:../Images/EigenvaluesMod_gr_314.gif]


[Graphics:../Images/EigenvaluesMod_gr_315.gif]

Introduce the free variables and find the eigenvector.

[Graphics:../Images/EigenvaluesMod_gr_316.gif]

[Graphics:../Images/EigenvaluesMod_gr_317.gif]

 

 

Verify the eigenpair.

[Graphics:../Images/EigenvaluesMod_gr_318.gif]


[Graphics:../Images/EigenvaluesMod_gr_319.gif]

Investigate the eigen-pair  [Graphics:../Images/EigenvaluesMod_gr_320.gif]

[Graphics:../Images/EigenvaluesMod_gr_321.gif]


[Graphics:../Images/EigenvaluesMod_gr_322.gif]

Introduce the free variables and find the eigenvector.

[Graphics:../Images/EigenvaluesMod_gr_323.gif]

[Graphics:../Images/EigenvaluesMod_gr_324.gif]

 

 

Verify the eigenpair.

[Graphics:../Images/EigenvaluesMod_gr_325.gif]


[Graphics:../Images/EigenvaluesMod_gr_326.gif]

The five eigen-pairs are:

[Graphics:../Images/EigenvaluesMod_gr_327.gif]


[Graphics:../Images/EigenvaluesMod_gr_328.gif]

We can compare this with the results obtained using Mathematicas Eigensystem procedure.

[Graphics:../Images/EigenvaluesMod_gr_329.gif]

[Graphics:../Images/EigenvaluesMod_gr_330.gif]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(c) John H. Mathews 2004