求线性代数大神,
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求线性代数大神,
求线性代数大神,
求线性代数大神,
D =
|1+x 1 1 1|
|-x -x 0 0|
|1 1 1+y 1|
|0 0 -y -y|
D = xy*
|1+x 1 1 1|
|1 1 0 0|
|1 1 1+y 1|
|0 0 1 1|
D = xy*
|1+x 1 0 0|
|1 1 0 0|
|0 0 1+y 1|
|0 0 1 1|
D = xy*[(1+x-1)(1+y-1)]] = (xy)^2