行列式与矩阵的基础概念及计算

2026-02-25 网络整理佚名790

Key Point:行列式是把数据排成方阵，两边加竖线的形式，2阶行列式等于ad减bc。3阶行列式可用Sarrus法则计算，先把矩阵的第一列和第二列复制到右侧，计算正对角线三个数的乘积和

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