nag_real_band_lin_solve (f04bbc) Example Program Results Solution 1 2 1 -2.0000 1.0000 2 3.0000 -4.0000 3 1.0000 7.0000 4 -4.0000 -2.0000 Estimate of condition number 5.6e+01 Estimate of error bound for computed solutions 6.3e-15