设
为
的重心,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfac0c7344bc8aff0a43cfc7c74012b8.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e63f0a93c5b86d629d6408f3697a1354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfac0c7344bc8aff0a43cfc7c74012b8.png)
2023高三·全国·专题练习 查看更多[2]
更新时间:2023-02-03 09:14:39
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【知识点】 用定义求向量的数量积解读
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【推荐2】如图在平行四边形
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