eigenvalue = -6 mult 2 eigenvalue = -5.41421 mult 3 eigenvalue = -4 mult 4 eigenvalue = -3.41421 mult 12 eigenvalue = -2.58579 mult 3 eigenvalue = -2 mult 2 eigenvalue = -1.41421 mult 18 eigenvalue = -0.585786 mult 12 eigenvalue = 0 mult 1 eigenvalue = 0.585786 mult 12 eigenvalue = 1.41421 mult 18 eigenvalue = 2 mult 2 eigenvalue = 2.58579 mult 3 eigenvalue = 3.41421 mult 12 eigenvalue = 4 mult 2 eigenvalue = 5.41421 mult 3 eigenvalue = 6 mult 2 eigenvalue = 8 mult 1