eigenvalue

A=

1 3 3
-3 -5 -3
3 3 1

Find three linearly independent eigenvectors of A. That is to get the general solution of the linear system for each eigenvalue. The we have

how to compute v1, v2 v3 like below??? pls tell me..

v1=
1
-1
1


v2=
-1
1
0

v3=
-1
0
1