1 . 在棱长为
的正四面体
中,点
满足
,点
满足
,当
、
最短时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9cdcab3b8efb3d856aed20c6246bf1.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14cbe3f26416fe15556a3a61ca03732c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da87e9c5951086b0205b3aebc24e9b54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9cdcab3b8efb3d856aed20c6246bf1.png)
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2021-10-23更新
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4卷引用:安徽省芜湖市第一中学2022-2023学年高二上学期第一次阶段性诊断测试数学试题