1 . 已知直线
与圆
交于
两点,过
分别作
的垂线与
轴交于
两点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0149cda9a3647b2c528b6d4973c0c364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d069d53560141d3092219daaba3a62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0128793bbbaabe8301b23e4c96ac8583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb6573126516181bee81e64513ec1da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0149cda9a3647b2c528b6d4973c0c364.png)
A.4 | B.3 | C.![]() | D.![]() |
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2017-03-02更新
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2295次组卷
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2卷引用:湖北省武昌实验中学2023届高考适应性考试数学试题
2 . 已知动点P与两定点
、
连线的斜率之积为![](https://img.xkw.com/dksih/QBM/2015/12/30/1572406206603264/1572406212739072/STEM/4883350e00664debb4d4d271f748077d.png)
(Ⅰ)求动点P的轨迹C的方程;
(Ⅱ)若过点
的直线l交轨迹C于M、N两点,且轨迹C上存在点E使得四边形OMEN(O为坐标原点)为平行四边形,求直线l的方程.
![](https://img.xkw.com/dksih/QBM/2015/12/30/1572406206603264/1572406212739072/STEM/19becf5635d348078174385259d30132.png)
![](https://img.xkw.com/dksih/QBM/2015/12/30/1572406206603264/1572406212739072/STEM/ef8ff21c60374b39ac0301c563cd59ab.png)
![](https://img.xkw.com/dksih/QBM/2015/12/30/1572406206603264/1572406212739072/STEM/4883350e00664debb4d4d271f748077d.png)
(Ⅰ)求动点P的轨迹C的方程;
(Ⅱ)若过点
![](https://img.xkw.com/dksih/QBM/2015/12/30/1572406206603264/1572406212739072/STEM/36fb208ed218473cb8eee634a262f392.png)
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解题方法
3 . 已知圆
和定点
,由圆
外一点
向圆
引切线
,切点为
,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/d648828a-da5d-4741-a31a-ea681f67b704.png?resizew=259)
(1) 求实数
间满足的等量关系;
(2) 若以
为圆心的圆
与圆
有公共点,试求圆
的半径最小时圆
的方程;
(3)当
点的位置发生变化时,直线
是否过定点,如果是,求出定点坐标,如果不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179fe7eff7abfdd092b63c9c1b82d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827539d066d1b78e7ef8bc1569864971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5363e6f66d2d0d287df7362129733eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b927242223336dee4ae69314709172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65cb6d355c19a9eb0a604ca38c0eca53.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/d648828a-da5d-4741-a31a-ea681f67b704.png?resizew=259)
(1) 求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2) 若以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
您最近一年使用:0次
2016-12-03更新
|
874次组卷
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3卷引用:2015-2016学年湖北荆州中学高二上学期期中理科数学试卷
10-11高一下·内蒙古赤峰·期中
4 . 已知过点
的直线L在两坐标轴上的截距均为正值,当两截距之和最小时,求直线L的方程为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543aea26448e182fc21cb44ea87ed4b8.png)
您最近一年使用:0次
2016-12-03更新
|
1722次组卷
|
7卷引用:2015-2016学年湖北省黄石市有色一中高二10月月考文科数学试卷
2015-2016学年湖北省黄石市有色一中高二10月月考文科数学试卷(已下线)2010-2011年内蒙古赤峰二中高一第二学期期中考试理科数学人教A版高中数学必修二第三章直线与方程单元测试卷(一)第三章 第二节 3.2 直线的方程上海市华东师范大学附属周浦中学2020-2021学年高二上学期期中数学试题(已下线)专题4.1 坐标平面上的直线【压轴题型专项训练】-2020-2021学年高二数学下学期期末专项复习(沪教版)(已下线)2.2.2 直线的两点式方程【第一练】