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增广矩阵 (A, b) =
[1 -2 3 -4 4]
[0 1 -1 1 -3]
[1 3 0 1 1]
[0 -7 3 1 -3]
初等行变换为
[1 -2 3 -4 4]
[0 1 -1 1 -3]
[0 5 -3 5 -3]
[0 -7 3 1 -3]
初等行变换为
[1 0 1 -2 -2]
[0 1 -1 1 -3]
[0 0 2 0 12]
[0 0 -4 8 -24]
初等行变换为
[1 0 0 -2 -8]
[0 1 0 1 3]
[0 0 1 0 6]
[0 0 0 8 0]
初等行变换为
[1 0 0 0 -8]
[0 1 0 0 3]
[0 0 1 0 6]
[0 0 0 1 0]
方程组有唯一解 x = (-8, 3, 6, 0)^T
[1 -2 3 -4 4]
[0 1 -1 1 -3]
[1 3 0 1 1]
[0 -7 3 1 -3]
初等行变换为
[1 -2 3 -4 4]
[0 1 -1 1 -3]
[0 5 -3 5 -3]
[0 -7 3 1 -3]
初等行变换为
[1 0 1 -2 -2]
[0 1 -1 1 -3]
[0 0 2 0 12]
[0 0 -4 8 -24]
初等行变换为
[1 0 0 -2 -8]
[0 1 0 1 3]
[0 0 1 0 6]
[0 0 0 8 0]
初等行变换为
[1 0 0 0 -8]
[0 1 0 0 3]
[0 0 1 0 6]
[0 0 0 1 0]
方程组有唯一解 x = (-8, 3, 6, 0)^T
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