F08ZPF Example Program Results Weighted least-squares solution ( -0.9846, 1.9950) ( 3.9929, -4.9748) ( -3.0026, 0.9994) Residual vector ( 1.26E-04,-4.66E-04) ( 1.11E-03,-8.61E-04) ( 3.84E-03,-1.82E-03) ( 2.03E-03, 3.02E-03) Square root of the residual sum of squares 5.79E-03