2个回答
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4. (A, E) =
[3 -3 4 1 0 0]
[2 -3 4 0 1 0]
[0 -1 1 0 0 1]
初等行变换为
[1 0 0 1 -1 0]
[2 -3 4 0 1 0]
[0 -1 1 0 0 1]
初等行变换为
[1 0 0 1 -1 0]
[0 -3 4 -2 3 0]
[0 -1 1 0 0 1]
初等行变换为
[1 0 0 1 -1 0]
[0 1 -1 0 0 -1]
[0 0 1 -2 3 -3]
初等行变换为
[1 0 0 1 -1 0]
[0 1 0 -2 3 -4]
[0 0 1 -2 3 -3]
A^(-1) =
[ 1 -1 0]
[-2 3 -4]
[-2 3 -3]
[3 -3 4 1 0 0]
[2 -3 4 0 1 0]
[0 -1 1 0 0 1]
初等行变换为
[1 0 0 1 -1 0]
[2 -3 4 0 1 0]
[0 -1 1 0 0 1]
初等行变换为
[1 0 0 1 -1 0]
[0 -3 4 -2 3 0]
[0 -1 1 0 0 1]
初等行变换为
[1 0 0 1 -1 0]
[0 1 -1 0 0 -1]
[0 0 1 -2 3 -3]
初等行变换为
[1 0 0 1 -1 0]
[0 1 0 -2 3 -4]
[0 0 1 -2 3 -3]
A^(-1) =
[ 1 -1 0]
[-2 3 -4]
[-2 3 -3]
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