名校
解题方法
1 . 阿波罗尼斯(约公元前262-190年)证明过这样一个命题:平面内到两定点距离之比为常数
(
且
)的点的轨迹是圆,后人将这个圆称为阿氏圆.已知动点
到点
与点
的距离之比为2,记动点
的轨迹为曲线
.
(1)求曲线
的方程;
(2)过点
作曲线
的切线,求切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c525393775354325cbf7839366ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf90f8358fa8cd9bc8c99ea48d9ae1a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2020-12-04更新
|
577次组卷
|
3卷引用:安徽省合肥市第十一中学2020-2021学年高二上学期期中数学(文)试题
2 . 已知圆
的方程为
,直线
的方程为
,点
在直线上,过点
作圆
的切线
,切点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/6b1f27de-a3b3-44cc-9e56-612d38470955.png?resizew=136)
(1)若过点
的坐标为
,求切线
方程;
(2)求四边形
面积的最小值;
(3)求证:经过
三点的圆必过定点,并求出所有定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa9dd4d452ba05247ea59caf9ad9fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f52cb58b6bc5d71030463ba7e28134.png)
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/6b1f27de-a3b3-44cc-9e56-612d38470955.png?resizew=136)
(1)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac7c28099bfbb7dc2a45ad166eace05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
(2)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec51d1ad99e9e93296c43ed1b2b8ed5e.png)
(3)求证:经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dac152e5e7d8f9549fbc04c1d42bbfa.png)
您最近一年使用:0次
名校
3 . 已知圆M的方程为
,直线l的方程为
,点P在直线l上,过P点作圆M的切线
,
,切点为A,B.
(1)若
,试求点P的坐标;
(2)求证:经过A,P,M三点的圆必过定点,并求出所有定点的坐标;
(3)设线段
的中点为N,求点N的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa9dd4d452ba05247ea59caf9ad9fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f52cb58b6bc5d71030463ba7e28134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15b82151bff7cc0238d2034a6129f0.png)
(2)求证:经过A,P,M三点的圆必过定点,并求出所有定点的坐标;
(3)设线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
4 . 已知圆
的方程为
,点
在直线
:
上,过点
作圆
的切线
,
,切点为
,
.
(1)若点
的坐标为
,求切线
,
方程;
(2)证明:经过
,
,
三点的圆必过定点,并求出所有定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ecf7a6913d90c2df051d608011cc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f52cb58b6bc5d71030463ba7e28134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac7c28099bfbb7dc2a45ad166eace05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)证明:经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2020-08-07更新
|
285次组卷
|
2卷引用:湖南省岳阳市2019-2020学年高二下学期期末数学试题
2019高三上·全国·专题练习
名校
5 . 已知圆
:
,直线
过定点
.
(1)若
与圆相切,求
的方程;
(2)若
与圆相交于
,
两点,线段
的中点为
,又
与
:
的交点为
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d08158fd61e70c9e46e81c793b96fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0f2ef0a60be68075ef22fc4159291c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7922050b92aaa9af6abf24f01fb4b23.png)
您最近一年使用:0次
2020-01-17更新
|
646次组卷
|
4卷引用:2020届高三12月第02期(考点08)(文科)-《新题速递·数学》
(已下线)2020届高三12月第02期(考点08)(文科)-《新题速递·数学》新疆乌鲁木齐第70中学2019-2020学年高一上学期期末数学考试(问卷)试题人教B版(2019) 选择性必修第一册 过关斩将 第二章 平面解析几何 2.3 圆及其方程 2.3.3 直线与圆的位置关系湖南省邵阳市武冈市2019-2020学年高一上学期期末数学试题
6 . 在平面直角坐标系
中,已知圆
和圆
.
(1)若直线
过点
,且与圆
相切,求直线
的方程;
(2)若直线
过点
,且被圆
截得的弦长为
,求直线
的方程;
(3)直线
的方程是
,证明:直线
上存在点
,满足过点
的无穷多对互相垂直的直线
和
,它们分别与圆
和圆
相交,且直线
被圆
截得的弦长与直线
被圆
截得的弦长相等.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5054a37afec47ff786ca3cc4614770d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad4fa6fe5297b93f1b04c98036050a2.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d295a4cc3a58f9f38ee98337313c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7291b3d921f595f28960abcdce6dfbed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a61d77911527508524874b212a0937d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](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/d7f2813ee8f26cca880b6427f5f545d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f5ad482f40a92de6cb22fe0da582ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f2813ee8f26cca880b6427f5f545d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f5ad482f40a92de6cb22fe0da582ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次
2019-10-29更新
|
530次组卷
|
5卷引用:人教B版 必修2 必杀技 第二章 专题4 圆的综合问题
14-15高二上·江苏徐州·期中
7 . 已知圆
,点
是直线
上一动点,过点
作圆的切线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e0708a1bf805537aba1def39568bc50.png)
(1)当
的横坐标为2时,求切线方程;
(2)求证:经过
三点的圆
必过定点,并求此定点的坐标;
(3)当线段
长度最小时,求四边形
的面积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7063d800d4509522d9d299c5f17462c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e0708a1bf805537aba1def39568bc50.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)求证:经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e45f24f3b9679dfba3036e428f27f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(3)当线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce55d12917b2c9372e6786238df3b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
名校
8 . 已知圆
经过两点
,且圆心
在直线l:
上.
Ⅰ
求圆
的方程;
Ⅱ
求过点
且与圆
相切的直线方程;
Ⅲ
设圆
与x轴相交于A、B两点,点P为圆
上不同于A、B的任意一点,直线PA、PB交y轴于M、N点
当点P变化时,以MN为直径的圆
是否经过圆
内一定点?请证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e66a1d3fd21927cf15e3745286e665c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d4308c61e17fb86707a9105539c6dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e66a1d3fd21927cf15e3745286e665c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae8459bf42bf2dd33fc4eabbb23f82e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e66a1d3fd21927cf15e3745286e665c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2141c6a430936bc80b3cb8f32c7dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e66a1d3fd21927cf15e3745286e665c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e66a1d3fd21927cf15e3745286e665c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e66a1d3fd21927cf15e3745286e665c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b7d2453cb5ae2da2b898c139b0cb1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e66a1d3fd21927cf15e3745286e665c.png)
您最近一年使用:0次
名校
9 . 在平面直角坐标系xOy中,已知圆C的方程为
,点
.
求过点M且与圆C相切的直线方程;
过点M任作一条直线与圆C交于A,B两点,圆C与x轴正半轴的交点为P,求证:直线PA与PB的斜率之和为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259e9a874ba8a4fbc027e01699a81d8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50b70a5e6dd716c2d2fbeccfc255ee0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
您最近一年使用:0次
2018-08-15更新
|
2058次组卷
|
3卷引用:2017-2018学年辽宁省抚顺二中高一(上)期末数学试题
名校
10 . 已知椭圆
的离心率为
,左、右焦点分别为
,且
,
⊙
与该椭圆有且只有一个公共点.
(1)求椭圆标准方程;
(2)过点
的直线与⊙
相切,且与椭圆相交于
两点,求证:
;
(3)过点
的直线
与⊙
相切,且与椭圆相交于
两点,试探究
的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9b3989176291d0411305c31f590ec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b2d4ff799e2f87b3786a04c83f63d5d.png)
⊙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04cf28ef033367a93ab80801df41c88f.png)
(1)求椭圆标准方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d603b2b163e44a464f88a384da3229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff1b84446336cb832a0da3b3d9c4ae55.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d603b2b163e44a464f88a384da3229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7fa328f91b9efe3e9e785625616d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b694a0cf87ff75a60a72ece1580e845f.png)
您最近一年使用:0次