线性代数,4阶行列式中含有因子a13a31的项是___

分类: 作业答案 • 2023-01-15 13:50:33

问题描述：

答

一般项是 (-1)^t(3 j2 1 j4) a13a2j2a31a4j4
j2=2,j4=4 时,t(3214)=3
故4阶行列式中含有因子a13a31的项是
-a13a22a32a44,a13a24a31a42