# Example 4.8 "Collection of Matrices for Testing Computational Algorithms", Robert T. Gregory, David L. Karney
6
5   1 -2  0 -2  5
1   6 -3  2  0  6
-2 -3  8 -5 -6  0
0   2 -5  5  1 -2
-2  0 -6  1  6 -3
5   6  0 -2 -3  8 


