解题方法
1 . 已知向量
为互相垂直的两个单位向量,若向量
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a4a9537264201de1f4c0b5dd236077.png)
,则当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
__________ 时,
取到最小值;此时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e00665a8c1971c54615a013740a0171.png)
的最小值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5719d3ef48c90aba13985cd42f9469f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a4a9537264201de1f4c0b5dd236077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3000ec4b24dc6547cd7aaafa7c4b4405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87aafc1e049160afcf94f26f330012be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e00665a8c1971c54615a013740a0171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59adb100c1a95619a62c5fd5a07aade1.png)
您最近一年使用:0次
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解题方法
2 . 平面内互不重合的点
、
、
、
、
、
、
,若
,其中
,2,3,4,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2857fac4963b129d99e79dcb3e13d295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a821e643d5fae24caed0faa6d423dad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae2c84ddd51f10d399401cbf91a1217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45176df950dfe48b8ca7eac08ee349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d2f8b944ab6d21b77a1f52a0530654.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-02-27更新
|
459次组卷
|
3卷引用:北京市清华大学附中2024届高三下学期开学考试数学试题