1 . 已知曲线C:
.
(1)求证:不论m取何实数,曲线C恒过一定点;
(2)证明当
时,曲线C是一个圆,且圆心在一条定直线上;
(3)若曲线C与
轴相切,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df125068b73ce2fb313c5e2d86318e1c.png)
(1)求证:不论m取何实数,曲线C恒过一定点;
(2)证明当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aed0bfba78e2be6a0a8c500ce0eb8a1.png)
(3)若曲线C与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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2 . 已知椭圆C:
(a>b>0)的离心率
,短轴长为
.如图,椭圆左顶点为A,过原点O的直线(与坐标轴不重合)与椭圆C交于P,Q两点,直线PA,QA分别与y轴交于M,N两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/d5a3a07e-06c3-477b-b0ba-bbbdf9324e87.png?resizew=183)
(1)求证:
为定值;
(2)试问以MN为直径的圆是否经过定点?请证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/d5a3a07e-06c3-477b-b0ba-bbbdf9324e87.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c828c44a61d2eca627dd4fd96f3cedb6.png)
(2)试问以MN为直径的圆是否经过定点?请证明你的结论.
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2022-12-26更新
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2卷引用:辽宁省沈阳市第二中学2022-2023学年高三上学期期末数学试题
3 . 已知曲线C的方程是
.
(1)证明曲线C是一个圆;
(2)直线l经过坐标原点且不与y轴重合,l与圆C相交于
、
两点,求证:
为定值;
(3)斜率为1的直线m与圆C相交于D,E两点,求直线m的方程,使
的面积最大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2025bac7b08ec9f206cfce02bdd7ec.png)
(1)证明曲线C是一个圆;
(2)直线l经过坐标原点且不与y轴重合,l与圆C相交于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fef976a0230bdfe3bc758e93987ba8.png)
(3)斜率为1的直线m与圆C相交于D,E两点,求直线m的方程,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
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解题方法
4 . 已知圆
,点P是圆C上的动点,点
是圆C内一点,线段
的垂直平分线交
于点Q,当点P在圆C上运动时点Q的轨迹为E.
(1)求E的方程;
(2)设M,N是曲线E上的两点,直线
与曲线
相切.证明:当
时,
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6560df7b686ca331164fb410861f275a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d314b47d37c9f58e05ad11f3e68e27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
(1)求E的方程;
(2)设M,N是曲线E上的两点,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7316791989acde59f6d6f65c0733c3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23ce5966c37efe1732853c9163e915c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db31b6ce9408706f77680ac8c75c2ab.png)
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名校
5 . 已知圆C:
,
.
(1)证明:圆C过定点.
(2)当
时,过
作圆C的两条切线,切点分别为A,B,求直线AB的方程;
(3)当
时,若直线l:
与圆C交于M,N两点,且
,其中O为坐标原点,求k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57352787959c24318b6b164e55bae277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd9736828195f010db4e1f0a9dea7a4.png)
(1)证明:圆C过定点.
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2f2d7c81cb44416bcdf59419637682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21b59d92c33a3b451d6cc13878c45.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2f2d7c81cb44416bcdf59419637682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231896d2386c924306fce5ccf9f9e8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331c27b493b12fc43837085e9bcfd83d.png)
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2023-11-09更新
|
607次组卷
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3卷引用:河北省保定市定州市2023-2024学年高二上学期期中数学试题
解题方法
6 . (1)过点
的直线交抛物线
于点
,
,证明:以
为直径的圆过原点
;
(2)已知
的顶点
,
的坐标分别为
,
,顶点
在圆
上运动,求
的重心
的轨迹方程并指出该轨迹是什么曲线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65368687df4d7e3b9304e85ec4de354c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/d0f9f734c03d04c21edefa08e0acc1fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134c698e0cd1926b40bb19b5fe29e2b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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名校
7 . 证明圆
与圆
内切,并求切点坐标以及两个圆的公切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/651ab1ad028374feaaf5b3129dfd7d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8f998b01e272a0ec209bd10b6ede7a.png)
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8 . 已知圆
,圆
.
(1)证明:圆
与圆
相交;
(2)求两圆的公共弦长;
(3)求过两圆的交点且圆心在直线
上的圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/918e06b55deedf5d11baa3742a3296b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7fa56fa118b343018941be47958637d.png)
(1)证明:圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)求两圆的公共弦长;
(3)求过两圆的交点且圆心在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96971237d9be4e181aa99f6aad995709.png)
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解题方法
9 . 已知圆C:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f224d63c2665fe008e0023feea0d447.png)
(1)证明:圆C恒过两个点.
(2)当
时,若过点
的直线l与圆C交于M,N两点,且
,求直线l的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f224d63c2665fe008e0023feea0d447.png)
(1)证明:圆C恒过两个点.
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25c90e0f38fb899bb6a579b05c19c66.png)
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2023-11-10更新
|
140次组卷
|
3卷引用:云南省昆明市官渡区艺卓中学2023-2024学年高一上学期11月期中考试数学试题
名校
解题方法
10 . 已知圆
.
(1)证明:圆
过定点.
(2)当
时,求直线
被圆
截得的弦长.
(3)当
时,若直线
与圆
交于
两点,且
,其中
为坐标原点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4317a470672a5a775ec09c06d7ac96cf.png)
(1)证明:圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2f2d7c81cb44416bcdf59419637682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2f2d7c81cb44416bcdf59419637682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0d6d0cfe389abca252332223b5da17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331c27b493b12fc43837085e9bcfd83d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2023-10-05更新
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951次组卷
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3卷引用:河北省邢台市四校质检联盟2023-2024学年高二上学期第一次月考数学试题
河北省邢台市四校质检联盟2023-2024学年高二上学期第一次月考数学试题河北省邢台市河北南宫中学2023-2024学年高二上学期第一次月考数学试题(已下线)期中考前必刷卷01(范围:第1章~3.2 基础卷)-2023-2024学年高二数学上学期期中考点大串讲(苏教版2019选择性必修第一册)