   Dimension 3 X 3
 A = 
    0.54830441E+07  0.43957100E+07 -0.71363100E+07  0.51053100E+07  0.84060800E+07 -0.28406200E+07
   -0.64806100E+07 -0.33007700E+07  0.97052551E+07
 x = 
    0.54146880E-01 -0.21568449E-01  0.28820708E-01
 b = 
    0.34628600E+00 -0.28247700E-01  0.57672000E-04
