这个矩阵的逆矩阵 应该怎么算?
1个回答
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(A, E) =
[ 1/2 0 0 0 1 0 0 0]
[ 0 1/2 0 0 0 1 0 0]
[-1/2 0 1/2 0 0 0 1 0]
[ 0 3/2 0 -3 0 0 0 1]
初等行变换为
[ 1 0 0 0 2 0 0 0]
[ 0 1 0 0 0 2 0 0]
[ 0 0 1/2 0 1 0 1 0]
[ 0 0 0 -3 0 -3 0 1]
初等行变换为
[ 1 0 0 0 2 0 0 0]
[ 0 1 0 0 0 2 0 0]
[ 0 0 1 0 2 0 2 0]
[ 0 0 0 1 0 1 0 -1/3]
A^(-1) =
[ 2 0 0 0]
[ 0 2 0 0]
[ 2 0 2 0]
[ 0 1 0 -1/3]
[ 1/2 0 0 0 1 0 0 0]
[ 0 1/2 0 0 0 1 0 0]
[-1/2 0 1/2 0 0 0 1 0]
[ 0 3/2 0 -3 0 0 0 1]
初等行变换为
[ 1 0 0 0 2 0 0 0]
[ 0 1 0 0 0 2 0 0]
[ 0 0 1/2 0 1 0 1 0]
[ 0 0 0 -3 0 -3 0 1]
初等行变换为
[ 1 0 0 0 2 0 0 0]
[ 0 1 0 0 0 2 0 0]
[ 0 0 1 0 2 0 2 0]
[ 0 0 0 1 0 1 0 -1/3]
A^(-1) =
[ 2 0 0 0]
[ 0 2 0 0]
[ 2 0 2 0]
[ 0 1 0 -1/3]
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