向量数乘运算及其几何意义
向量数乘运算及其几何意义
向量AB+BC+CA是多少啊
向量AB+BC+CA是多少啊
数学人气:638 ℃时间:2020-02-06 06:11:48
优质解答
是0向量,意义就是一个三角形的闭环.
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