OUTPUT:
[  1.000000000000E+00 -2.000000000000E+00  3.000000000000E+00  4.000000000000E+00 ]
[  4.000000000000E+00 -5.000000000000E+00  6.000000000000E+00  7.000000000000E+00 ]
[  7.000000000000E+00  8.000000000000E+00 -9.000000000000E+00  1.000000000000E+01 ]
[  8.000000000000E+00  9.000000000000E+00 -9.000000000000E+00 -1.100000000000E+01 ]

[  1.700000000000E+01 ]
[  1.800000000000E+01 ]
[  1.900000000000E+01 ]
[  2.000000000000E+01 ]

-1104
[ -1.684782608696E-01  1.739130434783E-01  5.434782608696E-03  5.434782608696E-02 ]
[  1.595108695652E+00 -6.304347826087E-01 -3.532608695652E-02  1.467391304348E-01 ]
[  1.362318840580E+00 -4.492753623188E-01 -8.695652173913E-02  1.304347826087E-01 ]
[  6.793478260870E-02 -2.173913043478E-02  4.619565217391E-02 -3.804347826087E-02 ]

solution->
[  1.456521739130E+00 ]
[  1.803260869565E+01 ]
[  1.602898550725E+01 ]
[  8.804347826087E-01 ]