1 . 已知关于
,
的方程
:
表示圆
.
(Ⅰ)求
的取值范围;
(Ⅱ)若
,过点
作
的切线,求切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3eaf44e8fac880eec239aa55846f767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b00f32e1420c0dceaf59ca70b8ec2a5.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb8f8f39e1d3eea420b0de792d20f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2020高三·全国·专题练习
2 . 已知圆
,分别求满足下列条件的圆的切线方程.
(1)与直线
平行;
(2)与直线
垂直;
(3)过切点
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15026a1a18416fc1daddc2a4e168ccb6.png)
(1)与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4f7744e04704e5363bd5d068635480.png)
(2)与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48fc5b5ed7b71bf46755f0f7dbf0fc19.png)
(3)过切点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca8316866d8f61424c8ef98d5882ba8.png)
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3 . 求过圆
上一点
的切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3864364d232bfd1af09e354585ed3a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a42451bdbef6c82dbaf8e06f0614794.png)
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4 . 已知圆
过两点
,
,且圆心在直线
上.
(1)求圆
的标准方程;
(2)求过点
且与圆
相切的直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26e951d6d2369e8da79a793a93a66a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a945674767bd7c5ad36073dd11327dc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32c935806559b1a913a7edb3c804999.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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名校
解题方法
5 . 已知椭圆
的左顶点为
,右焦点为
,过
作垂直于
轴的直线交该椭圆于
,
两点,直线
的斜率为
.
(Ⅰ)求椭圆的离心率;
(Ⅱ)若
的外接圆在
处的切线与椭圆交另一点于
,且
的面积为
,求椭圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9399c9a2a31b0e3165aea2d6ccc4f7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(Ⅰ)求椭圆的离心率;
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da76b04ad4d41bf60ff2861af879508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55f8fb85d45a8b8eb3526751fb8c5826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea928a9d8d28d3c80dc60a7fa107d26.png)
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2019-06-14更新
|
3632次组卷
|
5卷引用:天津市杨村第一中学2019届高三年级热身练(二)数学(理)试题
天津市杨村第一中学2019届高三年级热身练(二)数学(理)试题2020届山东省临沂市临沭县高三上学期期末数学试题(已下线)专题01 直线与圆相结合问题(第五篇)-备战2020年高考数学大题精做之解答题题型全覆盖(已下线)专题01 数形巧结合,“玩转”离心率(第五篇)-2020高考数学压轴题命题区间探究与突破(已下线)2023年天津高考数学真题变式题16-20
名校
6 . 已知方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c8479be26679a4c4888a3f92776679.png)
(1)若此方程表示圆,求
的取值范围;
(2)若此方程表示圆
,且点
在圆
上,求过点
的圆
的切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c8479be26679a4c4888a3f92776679.png)
(1)若此方程表示圆,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若此方程表示圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bdfc750fe0ace842a461e89f2b7b290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c9708ef0dc6d6f5dcf6596d3e4f6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2018-02-11更新
|
808次组卷
|
2卷引用:安徽省六安市第一中学2017-2018学年高一上学期期末考试数学试题
名校
解题方法
7 . 已知点
,圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b058c26b9960bc386ef00030233624d.png)
(1)写出圆C的标准方程;
(2)若过点A的圆的切线只有一条,求m的值及切线方程;
(3)若过点A且在两坐标轴上截距(截距不为零)相等的直线被圆截得的弦长为
,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3ca2d3a5e745f1cfca575abd0b360e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b058c26b9960bc386ef00030233624d.png)
(1)写出圆C的标准方程;
(2)若过点A的圆的切线只有一条,求m的值及切线方程;
(3)若过点A且在两坐标轴上截距(截距不为零)相等的直线被圆截得的弦长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ac4a1ec023ef41014cb7730cf8ffb.png)
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2017-12-29更新
|
70次组卷
|
2卷引用:北京师大附中2017-2018学年上学期高二年级期中考试数学试卷(理科)
名校
解题方法
8 . 已知圆C过点A(2,1),与y轴相切,且圆心在直线y=x上.
(1)求圆
的标准方程;
(2)求经过点A且与圆C相切的直线
的方程.
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求经过点A且与圆C相切的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2017-10-13更新
|
714次组卷
|
2卷引用:江西师大附中2017-2018学年上学期高二数学(文)10月月考数学试题
名校
解题方法
9 . 已知圆心为
的圆过点
和
,且圆心在直线
:
上.
(1)求圆心为
的圆的标准方程;
(2)过点
作圆的切线,求切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f783f66e31eb68062c458a0233e6d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3c219b93b706ae99e04fff6e720521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b979396a703fb14715ba39232f5786a.png)
(1)求圆心为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b785fc3ec9eaeb3db19533e4931d7a5.png)
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2016-12-05更新
|
995次组卷
|
3卷引用:2016-2017学年广东省普宁市华侨中学高一上学期第二次月考数学试卷