名校
1 . 在平面直角坐标系
中,点A的坐标为
,动点P满足
.
(1)求动点P的轨迹C的方程;
(2)若直线l过点
且与轨迹C相切,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29343388ca8b33dc98325e65382b38a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4acdd52633c8b8f717b5df32c328c5b.png)
(1)求动点P的轨迹C的方程;
(2)若直线l过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65037c060f6cfdd3ead02f35fe6e629.png)
您最近一年使用:0次
2021-02-03更新
|
730次组卷
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7卷引用:安徽省蚌埠第三中学2021-2022学年高二上学期10月教学质量检测数学试题
解题方法
2 . 已知圆
.
(1)若直线
过定点
,且与圆
相切,求直线
的方程;
(2)若圆
的半径为4,圆心在直线
上,且与圆
外切,求圆
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85882a636539d1f53566cc5822bdc02c.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95e84f5c91c910aaafc5e74dbfbdf59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0985b973395bcd371cd1e26d3fcd1c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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19-20高一·浙江杭州·期末
名校
3 . 已知在平面直角坐标系xOy中,圆
与y轴交于C,D两点,点P在第一象限且为圆O外一点,直线PC,PD分别交圆O于点A,B,交x轴于点Q,R.
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638986178723840/2642121916506112/STEM/9a5ff42e046c4aea89742a0697c3da28.png?resizew=378)
(1)若直线
的倾斜角为
,
,求点
坐标;
(2)过
作圆
的两条切线分别交
轴于点
,
,试问
是否为定值?若是,求出这个定值:若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638986178723840/2642121916506112/STEM/9a5ff42e046c4aea89742a0697c3da28.png?resizew=378)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8762c879517c7d90e8b7e791c5b25d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)过
![](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/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/6c1580e91cf9a4b76724e31b2fb5cf19.png)
您最近一年使用:0次
2021-01-23更新
|
354次组卷
|
8卷引用:安徽省北京师范大学蚌埠附属学校(高中部)2021-2022学年高二上学期期中数学试题
安徽省北京师范大学蚌埠附属学校(高中部)2021-2022学年高二上学期期中数学试题(已下线)【新东方】杭州新东方高中数学试卷386浙江省杭州市第二中学2020-2021学年高二上学期期中数学试题山西省晋城市高平一中、阳城一中、高平实验中学2020-2021学年高二上学期期末联考数学(理)试题山西省晋城市高平一中、阳城一中、高平实验中学2020-2021学年高二上学期期末联考数学(文)试题山西省晋城市(高平一中、阳城一中、高平实验中学)2020-2021学年高二上学期期末数学(理)试题福建省厦门市第一中学2020-2021学年高二上学期数学市质检模拟卷试题(已下线)专练29 期中综合检测卷(A卷)-2021-2022学年高二数学上册同步课后专练(人版A版选择性必修第一册)
解题方法
4 . 如图,已知点
,圆
:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/1a9042b7-b417-4817-b8b6-1427426abd0c.png?resizew=167)
(1)求过点
且与圆
相切的直线方程;
(2)设圆
与
轴的正半轴的交点是
,斜率为
的直线
过点
,且与圆
交于不同的两点
.
①设直线
的斜率分别是
,求证:
为定值;
②设
的中点为
,点
,当
,且
为整数时,求以
为直径的圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497911bc462170183e81d95bd509b70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/1a9042b7-b417-4817-b8b6-1427426abd0c.png?resizew=167)
(1)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)设圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
①设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ca520748c8b8d3878fb112a89ada7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f36374ce95a4945d0e58264c2b271f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f637d8983f1139258cd0742c60d833e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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2021-01-09更新
|
196次组卷
|
3卷引用:安徽省合肥市肥东县高级中学2020-2021学年高三上学期第三次月考数学(理)试题
5 . 已知平面直角坐标系
中,O为坐标原点,点P在过点
与圆C:
相切的直线上,且P点到圆心C的距离为5.
(1)求P点的坐标;
(2)若过点P的直线与圆C相交于M,N两点,且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40630a669f4eedf626bc24851df10c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec416bf0140aaca8846facd72ebc198.png)
(1)求P点的坐标;
(2)若过点P的直线与圆C相交于M,N两点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa20bdf72239e98b2b781191b35bb7e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac35b1e8a952aac4f4cdaaf02d868d04.png)
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2020-12-23更新
|
98次组卷
|
2卷引用:安徽省江南十校2020-2021学年高三上学期第二次联考文科数学试题
名校
6 . 已知动点P到两个定点
的距离之比为
.
(1)求动点P的轨迹C的方程;
(2)若过点
的直线l与曲线相切,求直线l的方程;
(3)已知圆Q的圆心为
,且圆Q与x轴相切,若圆Q与曲线C有公共点,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9f6d91f04b1bad46c159500244874d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求动点P的轨迹C的方程;
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6868a51ea0a78f2605d3d1cbe701351b.png)
(3)已知圆Q的圆心为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de3dfcfbe5ef09dde0c3d9423b751c09.png)
您最近一年使用:0次
名校
解题方法
7 . 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
名校
解题方法
8 . 已知圆
:
.
(1)过点
作圆
的切线l,求l的方程;
(2)若圆
:
与圆
相交于A,B两点,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e171327b811e5b11e8767cd71e8d741.png)
(1)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec7451803a71d930998e5374d4fbdd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2fa3999ee9d877c35e111ae1a3a47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05da40a2d7dab5d6a003906ca19d4749.png)
您最近一年使用:0次
2020-11-21更新
|
546次组卷
|
2卷引用:安徽省池州市东至县第三中学2020-2021学年高二上学期期中理科数学试题
9 . 圆
,点
在直线
上,过点
作圆
的两条切线,
为切点.
(1)若
点横坐标为
,求直线
的方程;
(2)求切线长
的最小值,及此时点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966afc719598661748dead7fb88dea20.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/01c74a907dda6bb7d9d56d009d9df253.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求切线长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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10 . 已知椭圆
的左、右焦点分别为
,点
在椭圆
上,且
的面积为
.
(1)求椭圆
的方程;
(2)过原点
作圆
的两条切线,切点分别为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56206c599e06e712d3b4c2f52565256a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bc0b8968f9e70373ea15206fc83009f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b5d0c5e3f414d6eaefb9d19b42b405.png)
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