A =
5. 1. 0.
- 1. 3. 1.
- 2. 1. 10.
Centers are :
5.
Radius :
1.
Centers are :
3.
Radius :
2.
Centers are :
10.
Radius :
3.
The figure indicates that 2 of the eigenvalues of A lie inside the intersected region of 2 circles, and the remaining eigen value in the other circle.