nag_real_sym_posdef_band_lin_solve (f04bfc) Example Program Results Solution 1 2 1 5.0000 -2.0000 2 -2.0000 6.0000 3 -3.0000 -1.0000 4 1.0000 4.0000 Estimate of condition number 7.4e+01 Estimate of error bound for computed solutions 8.2e-15