F07QVF Example Program Results

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

 Backward errors (machine-dependent)
         8.9E-17           7.3E-17
 Estimated forward error bounds (machine-dependent)
         1.2E-14           1.2E-14