Verify that ?i is an eigenvalue of A and that xi is a corresponding eigenvector. A =    8 −1 7   0 6 1 0 0 7, ?1 = 8, x1 = (1, 0, 0) ?2 = 6, x2 = (1, 2, 0) ?3 = 7, x3 = (−6, 1, 1) Ax1 =   8 −1 7   0 6 1 0 0 7   1   0 0 =                       = 8   1   0 0 = ?1x1 Ax2 =   8 −1 7   0 6 1 0 0 7   1   2 0 =                       = 6   1   2 0 = ?2x2 Ax3 =   8 −1 7   0 6 1 0 0 7   −6   1 1 =                       = 7   −6   1 1 = ?3x3

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Verify that ?i is an eigenvalue of A and that xi is a corresponding eigenvector.

A = 
 
8 −1 7
 
0 6 1
0 0 7
,
?1 = 8, x1 = (1, 0, 0)

?2 = 6, x2 = (1, 2, 0)

?3 = 7, x3 = (−6, 1, 1)
Ax1



=


 
8 −1 7
 
0 6 1
0 0 7
 
1
 
0
0



=


       
     
     
 
=


8
 
1
 
0
0



=


?1x1



Ax2



=


 
8 −1 7
 
0 6 1
0 0 7
 
1
 
2
0



=


       
     
     
 
=


6
 
1
 
2
0



=


?2x2



Ax3



=


 
8 −1 7
 
0 6 1
0 0 7
 
−6
 
1
1



=


       
     
     
 
=


7
 
−6
 
1
1



=


?3x3



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