nag_zgerfs (f07avc) Example Program Results Solution(s) 1 2 1 ( 1.0000, 1.0000) (-1.0000,-2.0000) 2 ( 2.0000,-3.0000) ( 5.0000, 1.0000) 3 (-4.0000,-5.0000) (-3.0000, 4.0000) 4 ( 0.0000, 6.0000) ( 2.0000,-3.0000) Backward errors (machine-dependent) 4.1e-17 8.7e-17 Estimated forward error bounds (machine-dependent) 5.8e-14 7.8e-14