链接:https://www.cnblogs.com/itsone/p/10728560.html
https://blog.youkuaiyun.com/weixin_43602607/article/details/114185687?utm_medium=distribute.pc_relevant.none-task-blog-2defaultbaidujs_baidulandingword~default-5.pc_relevant_default&spm=1001.2101.3001.4242.4&utm_relevant_index=8
叉乘还有另外一个几何意义就是:aXb等于由向量a和向量b构成的平行四边形的面积。
https://blog.youkuaiyun.com/Lu_gl/article/details/122330285?spm=1001.2101.3001.6650.1&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-1.pc_relevant_default&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-1.pc_relevant_default&utm_relevant_index=2
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