名校
解题方法
1 . 正方形ABCD中,
,点O为正方形内一个动点,且
,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96643cc016e7e68f30c445bf47936a3.png)
(1)当
时,求
的值;
(2)若P为平面ABCD外一点,满足
,记
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91934cac6477909cf68ec266f562a397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96643cc016e7e68f30c445bf47936a3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc1f08c7640e62e8717abf4d44a6c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7444214a631d3904f722bc05f07d0f0.png)
(2)若P为平面ABCD外一点,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1909a3a6c9c51b7232cbf5acdfdc734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c5b8a21ed3092f78d0c6c05267b635.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd288d4152caf5fc8187a1a901c8949f.png)
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2022-05-17更新
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5卷引用:江西省赣州市南康区唐江中学2022-2023学年高一下学期期中考试数学试题