=(-0.4904,-0.05104,0.3675) 用高斯顺序消去法求解 0.001 2.000 3.0001.000 (A|b)= -1.0003.712 4.6232.000 -2.0001.072 5.6433.000 0.0012.000 3.0001.000 → 0 2.0043.0051.002 0 4.001 6.0062.003 0.001 2.000 3.0001.000 0 2.0043.0051.002 0 0 5.00 2.00 解得 x=(-0.4000,-0.09980,0.4000)'是一个很坏的解 ( 0.4000, 0.09980,0.4000) . 2.00 1.002 1.000 0 0 5.00 0 2.004 3.005 0.001 2.000 3.000 2.003 1.002 1.000 0 4.001 6.006 0 2.004 3.005 0.001 2.000 3.000 3.000 2.000 1.000 2.000 1.072 5.643 1.000 3.712 4.623 0.001 2.000 3.000 (A | ) . 解得 是一个很坏的解 用高斯顺序消去法求解 T x b = − −                                 − = − T x ( 0.4904, 0.05104,0.3675) * = − −