eigenvalue = -6	mult 1
eigenvalue = -3.64575	mult 8
eigenvalue = -2	mult 4
eigenvalue = -1.64575	mult 8
eigenvalue = 0	mult 7
eigenvalue = 1.64575	mult 8
eigenvalue = 2	mult 3
eigenvalue = 3.64575	mult 8
eigenvalue = 8	mult 1