设a1,a2,a3为3维列向量,行列式|a1 a2 a3|=d,则|3a1+a2 2a2 a3|=
人气：132 ℃ 时间：2020-05-11 05:08:49
解答
|3a1+a2 2a2 a3|
=|3a1 2a2 a3|+|a2 2a2 a3|
=|3a1 2a2 a3|+0
=3^3*2^3|a1 a2 a3|
=216|a1 a2 a3|
=216d
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