F07PVF Example Program Results

 Solution(s)
                    1                 2
 1  ( 1.0000,-1.0000) ( 3.0000,-4.0000)
 2  (-1.0000, 2.0000) (-1.0000, 5.0000)
 3  ( 3.0000,-2.0000) ( 7.0000,-2.0000)
 4  ( 2.0000, 1.0000) (-8.0000, 6.0000)

 Backward errors (machine-dependent)
         5.1E-17           3.5E-17
 Estimated forward error bounds (machine-dependent)
         2.5E-15           3.0E-15