已知
,
在
上的投影向量为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd01707e8d32f277b83c007a5b15bd7.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8abca0f869e2f6b315408df493fd9bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32689b8f4d4ef3b5b0b9108caab32783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd01707e8d32f277b83c007a5b15bd7.png)
更新时间:2022-11-13 09:49:30
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解题方法
【推荐1】若向量
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35df371bc7447e53f138178f5bd23641.png)
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【推荐3】若向量
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