立即学习:https://edu.csdn.net/course/play/24913/285700?utm_source=blogtoedu
通过向量访问
1.矩阵名[向量1,向量2]
2.矩阵名[向量1,]
3.矩阵名[,向量2]
4.矩阵名[-向量1,-向量2]#删除向量
5.矩阵名[-向量1,]
6.矩阵名[,-向量2]
