eigenvalue = -8 mult 1 eigenvalue = -4.21819 mult 6 eigenvalue = -3.41421 mult 6 eigenvalue = -2.91852 mult 6 eigenvalue = -2 mult 8 eigenvalue = -1.29966 mult 6 eigenvalue = -0.585786 mult 6 eigenvalue = 0 mult 6 eigenvalue = 0.585786 mult 6 eigenvalue = 1.29966 mult 6 eigenvalue = 2 mult 8 eigenvalue = 2.91852 mult 6 eigenvalue = 3.41421 mult 6 eigenvalue = 4.21819 mult 6 eigenvalue = 8 mult 1