1 . 如图,已知抛物线C:
,圆E:
,直线OA,OB分别交抛物线于A,B两点,且直线OA与直线OB的斜率之积等于
,则直线AB被圆E所截的弦长最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550d183b05000722c74baf25eb4a6741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/25fc1eca-3d4b-4e67-b2e5-18ae72a492cc.png?resizew=148)
您最近一年使用:0次
2023-05-06更新
|
1383次组卷
|
5卷引用:山东省济南市历城第一中学2023届高考押题卷(二)数学试题
解题方法
2 . 已知抛物线
,点
、
在抛物线上,且分别位于
轴的上、下两侧,若
,则直线
过定点______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e04cd116f4923fc9afa7cd14ec61cbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
3 . 已知抛物线
:
上一点
,点
是抛物线
上的两动点,且
,则点
到直线
的距离的最大值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8953ded144195804384dcb494d5e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d01119d4ae546921746549b639bd83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7625d648c8bd1c8d84cc044827e59638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2019-03-11更新
|
531次组卷
|
2卷引用:【市级联考】山东省淄博市2019届高三3月模拟考试理科数学试题