F07PPF Example Program Results Solution(s) 1 2 1 ( 2.0000, 1.0000) (-8.0000, 6.0000) 2 ( 3.0000,-2.0000) ( 7.0000,-2.0000) 3 (-1.0000, 2.0000) (-1.0000, 5.0000) 4 ( 1.0000,-1.0000) ( 3.0000,-4.0000) Backward errors (machine-dependent) 5.1E-17 5.9E-17 Estimated forward error bounds (machine-dependent) 2.5E-15 3.0E-15 Estimate of reciprocal condition number 1.5E-01