解题方法
1 . 设圆
的圆心为
,点
,
,
为直线
上一点.若圆上存在两点A,B,使得点
满足
,则
面积的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5253f4472f790786def540cb0562ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57901924f7747648bcaca87f0bf9915d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcca4d75895d52a2a3fc296661aa4078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1947c5dfb6c83dd62fe3afc61cea48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec71f16aa557d420d6286b7747b2cb05.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 已知向量
,
,
满足
,
,
,则
的最大值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39880669e19c08b8d1069c99695f89ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e267ee434e4fa9810c04eb5fbda82f65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b485634e72a0b181f1d7b78ca4b977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e50ae35f2ff21e9780529aefe950e29.png)
您最近一年使用:0次
2022-03-18更新
|
1251次组卷
|
3卷引用:浙江省金华第一中学2022年全国高中数学联赛一试考前押题最后一卷