名校
1 . 在平面直角坐标系
中,点
,直线
,设圆
的半径为1且关于直线
对称.
(1)若圆心
在直线
上,过点
作圆
的切线,求切线的方程;
(2)点
关于点
的对称点为
,若圆
上存在点
,使
,求圆心
的横坐标
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc667996e571285a39c9df6c2260d8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5e07b7605ecef8f8988369505de4db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)若圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694033aa4e20853cf10f33c870007047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99613d7d73755a426251b8d5f89e5aa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e0806bd2e97fce9b07fa5b213dc087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-10-14更新
|
1025次组卷
|
2卷引用:江西省南昌市第二中学2017-2018学年高二上学期第一次月考数学(文)试题
名校
2 . 已知直线
和圆
.
(1)若直线
交圆
于
两点,求
;
(2)求过点
的圆的切线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e925b5e813520f15a53255380a1e4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89d24121ae77d85a4260da35740696a.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34517f479fb08f6096d2fb0362f3ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
(2)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2083d9ee4b7f6c07a2a027d85c47ed8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2016-12-04更新
|
490次组卷
|
2卷引用:江西省宜春市上高二中2023-2024学年高二上学期第三次月考数学试题
3 . 如图,在平面直角坐标系内,已知
,
两点,且圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
的方程为
,点
为圆
上的动点.
![](https://img.xkw.com/dksih/QBM/2015/8/27/1572225637851136/1572225643626496/STEM/ea2afa55-0c17-475d-ae1c-8f2b4fdef623.png?resizew=159)
(1)求过点
的圆的切线的方程;
(2)求
的最大值及其对应的点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e30645f36e8628b9e25d53598d5174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
的方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7543db5e900aa545e5ac2f0d49f33e59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2015/8/27/1572225637851136/1572225643626496/STEM/ea2afa55-0c17-475d-ae1c-8f2b4fdef623.png?resizew=159)
(1)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66194ab2c1322e97c88231947e98beff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次