nag_dgeqrt (f08abc) Example Program Results Least-squares solution(s) 1 2 1 1.5339 -1.5753 2 1.8707 0.5559 3 -1.5241 1.3119 4 0.0392 2.9585 Square root(s) of the residual sum(s) of squares 2.22e-02 1.38e-02