[理工] [工數]-行列式
1. 若 [a b c] -1 -1 -1
A =[d e f] 且 |A|=5,求(1)|3A| (2)|A |(3)|2A | (4)|(2A) |
[g h i] 2
(5)|A |
再度麻煩哩= =...
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