线性代数求最大无关组
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线性代数求最大无关组
![线性代数求最大无关组](/uploads/image/z/16060387-67-7.jpg?t=%E7%BA%BF%E6%80%A7%E4%BB%A3%E6%95%B0%E6%B1%82%E6%9C%80%E5%A4%A7%E6%97%A0%E5%85%B3%E7%BB%84%26nbsp%3B)
A = (a1,a2,a3,a4,a5) =
[1 1 1 1 1]
[0 1 -1 2 1]
[2 3 3 4 2]
[3 5 1 9 5]
行初等变换为
[1 1 1 1 1]
[0 1 -1 2 1]
[0 1 1 2 0]
[0 2 -2 6 2]
行初等变换为
[1 0 2 -1 0]
[0 1 -1 2 1]
[0 0 2 0 -1]
[0 0 0 2 0]
行初等变换为
[1 0 0 -1 1 ]
[0 1 0 2 1/2]
[0 0 1 0 -1/2]
[0 0 0 2 0 ]
行初等变换为
[1 0 0 0 1 ]
[0 1 0 0 1/2]
[0 0 1 0 -1/2]
[0 0 0 1 0 ]
一个最大无关组是 a1,a2,a3,a4,
a5 = a1+(1/2)a2-(1/2)a3
[1 1 1 1 1]
[0 1 -1 2 1]
[2 3 3 4 2]
[3 5 1 9 5]
行初等变换为
[1 1 1 1 1]
[0 1 -1 2 1]
[0 1 1 2 0]
[0 2 -2 6 2]
行初等变换为
[1 0 2 -1 0]
[0 1 -1 2 1]
[0 0 2 0 -1]
[0 0 0 2 0]
行初等变换为
[1 0 0 -1 1 ]
[0 1 0 2 1/2]
[0 0 1 0 -1/2]
[0 0 0 2 0 ]
行初等变换为
[1 0 0 0 1 ]
[0 1 0 0 1/2]
[0 0 1 0 -1/2]
[0 0 0 1 0 ]
一个最大无关组是 a1,a2,a3,a4,
a5 = a1+(1/2)a2-(1/2)a3