F07AHF Example Program Results Solution(s) 1 2 1 1.0000 3.0000 2 -1.0000 2.0000 3 3.0000 4.0000 4 -5.0000 1.0000 Backward errors (machine-dependent) 9.4E-17 3.7E-17 Estimated forward error bounds (machine-dependent) 2.4E-14 3.3E-14