名校
1 . 在直三棱柱
中,
,
,
,
是线段
上的动点,则
的最小值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a0946888ae70f1d37116c2d3867720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bc235df1d3cf1b65050cd1907590cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be3d85716c301231663fd71b697a4a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64335ca7a84a7b6711ca2cb531ed94a1.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在长方体
中,
,
,M为棱
上的一点.当
取得最小值时,
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/a73e72db-718d-43d0-9fca-d98c3670bb8c.png?resizew=126)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea36c5e19bec9537edf04a221d7e609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e884ca9429486026caa5e2310b0e4e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/a73e72db-718d-43d0-9fca-d98c3670bb8c.png?resizew=126)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-12-11更新
|
1166次组卷
|
4卷引用:安徽省马鞍山市第二中学2020-2021学年高二上学期期末理科数学试题