F07QPF Example Program Results

 Solution(s)
                    1                 2
 1  (-4.0000, 3.0000) (-1.0000, 1.0000)
 2  ( 3.0000,-2.0000) ( 3.0000, 2.0000)
 3  (-2.0000, 5.0000) ( 1.0000,-3.0000)
 4  ( 1.0000,-1.0000) (-2.0000,-1.0000)

 Backward errors (machine-dependent)
       8.1E-17    3.0E-17

 Estimated forward error bounds (machine-dependent)
       1.2E-14    1.2E-14

 Estimate of reciprocal condition number
       4.9E-02