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2.6 XA = X + BB^T
X(A-E) = BB^T
X = BB^T(A-E)^(-1)
(A-E, E) =
[ 0 -1 1 1 0 0]
[-1 0 -1 0 1 0]
[ 1 -1 0 0 0 1]
初等行变换为
[ 1 -1 0 0 0 1]
[ 0 -1 1 1 0 0]
[ 0 -1 -1 0 1 1]
初等行变换为
[ 1 0 -1 -1 0 1]
[ 0 1 -1 -1 0 0]
[ 0 0 -2 -1 1 1]
初等行变换为
[ 1 0 0 -1/2 -1/2 1/2]
[ 0 1 0 -1/2 -1/2 -1/2]
[ 0 0 1 1/2 -1/2 -1/2]
(A-E)^(-1) = -(1/2)*
[ 1 1 -1]
[ 1 1 1]
[-1 1 1]
X = BB^T(A-E)^(-1) = (1/2)*
[ 1 -1 1]
[-1 1 -1]
[ 1 -1 1]
X(A-E) = BB^T
X = BB^T(A-E)^(-1)
(A-E, E) =
[ 0 -1 1 1 0 0]
[-1 0 -1 0 1 0]
[ 1 -1 0 0 0 1]
初等行变换为
[ 1 -1 0 0 0 1]
[ 0 -1 1 1 0 0]
[ 0 -1 -1 0 1 1]
初等行变换为
[ 1 0 -1 -1 0 1]
[ 0 1 -1 -1 0 0]
[ 0 0 -2 -1 1 1]
初等行变换为
[ 1 0 0 -1/2 -1/2 1/2]
[ 0 1 0 -1/2 -1/2 -1/2]
[ 0 0 1 1/2 -1/2 -1/2]
(A-E)^(-1) = -(1/2)*
[ 1 1 -1]
[ 1 1 1]
[-1 1 1]
X = BB^T(A-E)^(-1) = (1/2)*
[ 1 -1 1]
[-1 1 -1]
[ 1 -1 1]
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