1 . 已知
是棱长为2的正方体,
,
分别是
和
的中点,建立如图所示的空间直角坐标系,试写出
,
,
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3904890c45e70637ea29595d803aa7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2cf03ac7a1b0aba75daa3b9f9b5768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854ba8731d1728ea921af3d97555e0f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/fb6fb650-cd46-430f-9da5-e1a2cb67ef1d.png?resizew=191)
您最近一年使用:0次
2 . 点
关于坐标平面
对称点
的坐标为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e313b245161f9e371777ba2727e291a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d96461d2b3421aed548b754637ca8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8396a7120abeaae6236a9292e5b9f8.png)
您最近一年使用:0次
名校
3 . 若空间直角坐标系中,x轴上一点P到点Q(3,1,1)的距离为
,则点P的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
A.(3,0,0) | B.(2,0,0) |
C.(4,0,0) | D.(2,0,0)或(4,0,0) |
您最近一年使用:0次
2020-03-28更新
|
183次组卷
|
2卷引用:海南省三亚华侨学校2019-2020学年高二上学期期中数学试题