求以下行列式的值|a1b1 a1b2 a1b3||a2b1 a2b2 a2b3||a3b1 a3b2 a3b3|
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求以下行列式的值
|a1b1 a1b2 a1b3||a2b1 a2b2 a2b3||a3b1 a3b2 a3b3|
|a1b1 a1b2 a1b3||a2b1 a2b2 a2b3||a3b1 a3b2 a3b3|
|a1b1 a1b2 a1b3|
|a2b1 a2b2 a2b3|=a1a2a3b1b2b3+a1a2a3b1b2b3+a1a2a3b1b2b3
|a3b1 a3b2 a3b3| -(a1a2a3b1b2b3+a1a2a3b1b2b3+a1a2a3b1b2b3)
=0
|a2b1 a2b2 a2b3|=a1a2a3b1b2b3+a1a2a3b1b2b3+a1a2a3b1b2b3
|a3b1 a3b2 a3b3| -(a1a2a3b1b2b3+a1a2a3b1b2b3+a1a2a3b1b2b3)
=0
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