eigenvalue = -7	mult 1
eigenvalue = -3.82843	mult 3
eigenvalue = -3.49396	mult 6
eigenvalue = -2.60388	mult 6
eigenvalue = -1.82843	mult 3
eigenvalue = -1	mult 7
eigenvalue = -0.109916	mult 6
eigenvalue = 0.109916	mult 6
eigenvalue = 1	mult 7
eigenvalue = 1.82843	mult 3
eigenvalue = 2.60388	mult 6
eigenvalue = 3.49396	mult 6
eigenvalue = 3.82843	mult 3
eigenvalue = 7	mult 1