nag_dtbrfs (f07vhc) Example Program Results

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

Backward errors (machine-dependent)
    4.7e-17     2.5e-17 
Estimated forward error bounds (machine-dependent)
    5.4e-14     5.8e-14