1 . 过点
作圆
的切线
,则切线
的斜率为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4754fbe523ca63eba3810a3f88f37df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
名校
2 . 圆心在射线
上的圆
与
轴相切,且被直线
截得的弦长为
.
(1)求圆
的方程;
(2)求过点
且与该圆相切的直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6509d72365e2c7f411c2cf43491d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42498f6e0fc9a61c9857b70a87f02c5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbff61fe9d4e93d7cc338489d1c99c40.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/570a136ae27fe3ef6d3e0a4a1624486f.png)
您最近一年使用:0次
2021-11-13更新
|
458次组卷
|
3卷引用:海南省海口中学2021-2022学年高二上学期期中考试数学试题
名校
解题方法
3 . 已知
,
,动点M满足
,设动点M的轨迹为C,
(1)求动点M的轨迹方程;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852b303689c31189cd47bb4a3220f9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b3b5e1dde66e11c8cd517ffa72b1b8.png)
(1)求动点M的轨迹方程;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02fe1b6f20cd9115202e23090f1ea9da.png)
您最近一年使用:0次
2020-12-11更新
|
311次组卷
|
3卷引用:海南省海口市海南中学2020-2021学年高二上学期期中考试数学试题