eigenvalue = -8 mult 1 eigenvalue = -5.41421 mult 12 eigenvalue = -2.82843 mult 36 eigenvalue = -2.58579 mult 12 eigenvalue = 0 mult 74 eigenvalue = 2.58579 mult 12 eigenvalue = 2.82843 mult 36 eigenvalue = 5.41421 mult 12 eigenvalue = 8 mult 1