名校
解题方法
1 . 在平面直角坐标系
中,已知点
,直线
,点M到l的距离为d,若点M满足
,记M的轨迹为C.
(1)求C的方程;
(2)过点
且斜率不为0的直线与C交于P,Q两点,设
,证明:以P,Q为直径的圆经过点A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da76dc8c91f5d037edfe0477ee07b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed0c6519373733b6606017b69efb03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812750d0fd2699239a76baa17ffe80dc.png)
(1)求C的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da76dc8c91f5d037edfe0477ee07b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3323d8f54140f6950b60a4df46ce991.png)
您最近一年使用:0次
2 . 设圆
的圆心为
,直线
过点
且与
轴不重合,
交圆
于
两点,过
作
的平行线交
于点
.
(1)证明
为定值,并写出点
的轨迹方程.
(2)直线
过点
且与点
的轨迹交于
两点,
的面积是否存在最大值?若存在,求出面积
的最大值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714df7f0c804617e1c8832d2e91b496a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ffd25dfc589c6698770e7d0af94318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ffd25dfc589c6698770e7d0af94318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13b2b09f9c6800d238e8d34018a01fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ffd25dfc589c6698770e7d0af94318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
您最近一年使用:0次
2021-01-01更新
|
369次组卷
|
2卷引用:河南省名校联盟2020-2021学年高二上学期12月联合考试数学(理)试题
3 . 在平面直角坐标系
中,已知
,动点
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69604f21dc564cbe76b2c8c734861f0.png)
(1)求动点
的轨迹
的方程;
(2)过点
的直线与
交于
两点,记直线
的斜率分别为
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8582976e042ca9950b21883a7f2bba38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69604f21dc564cbe76b2c8c734861f0.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](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)
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2019-09-27更新
|
1435次组卷
|
9卷引用:江西省南昌市2020届高三上学期开学摸底考试数学(文)试题
江西省南昌市2020届高三上学期开学摸底考试数学(文)试题2019年江西省南昌市高三上学期开学考试数学(文)试题2020届贵阳市四校高三上学期联合考试(四)数学理科试题2020届山西省大同市第一中学高三一模数学(理)试题四川省成都市金牛区成都七中万达学校2019-2020学年高二上学期期中数学文科试题(已下线)【新东方】【2021.4.27】【宁波】【高一上】【高中数学】【00118】(已下线)【新东方】【2021.5.25】【NB】【高二上】【高中数学】【NB00086】江西省抚州市南城一中2020--2021学年高二4月月考数学(文)试题(已下线)专题9.9 圆锥曲线的综合问题(练)-浙江版《2020年高考一轮复习讲练测》
4 . 设椭圆
的方程为
,斜率为
的动直线
交椭圆
于
、
两点,以线段
的中点
为圆心,
为直径作圆
.
(1)求圆心
的轨迹方程,并描述轨迹的图形;
(2)若圆
经过原点,求直线
的方程;
(3)证明:圆
内含或内切于圆
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)求圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)证明:圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49137970108f50350a3211aa0281faaf.png)
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2020-03-21更新
|
760次组卷
|
2卷引用:上海市控江中学2019-2020学年高二上学期期末数学试题
名校
5 . 圆O:x2+y2=9上的动点P在x轴、y轴上的射影分别是P1,P2,点M满足
.
(1)求点M的轨迹C的方程;
(2)点A(0,1),B(0,﹣3),过点B的直线与轨迹C交于点S,N,且直线AS、AN的斜率kAS,kAN存在,求证:kAS•kAN为常数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d00285706446f20e0955adb5f0de582.png)
(1)求点M的轨迹C的方程;
(2)点A(0,1),B(0,﹣3),过点B的直线与轨迹C交于点S,N,且直线AS、AN的斜率kAS,kAN存在,求证:kAS•kAN为常数.
您最近一年使用:0次
2019-05-30更新
|
1657次组卷
|
5卷引用:【市级联考】湖南省益阳市2019届高三上学期期末考试数学(理)试题
【市级联考】湖南省益阳市2019届高三上学期期末考试数学(理)试题【市级联考】山东省泰安市教科研中心2019届高三考前密卷数学(理)试题(已下线)专题06 解析几何中的定点、定值问题(第五篇)-备战2020年高考数学大题精做之解答题题型全覆盖山东省烟台市莱州市第一中学2020-2021学年高二上学期12月月考数学试题广东省深圳市宝安中学2019-2020学年高二上学期期中数学试题
6 . 如图,在
中,点P的坐标为
,点A在
轴上,点Q在
轴的正半轴上,
,在AQ的延长线上取一点M,使
.
(Ⅰ)当点A在
轴上移动时,求动点M的轨迹E;
(Ⅱ)自点
引直线与轨迹E交于不同的两点B、C,点B关于
轴的对称点
记为D,设
,点
的坐标为
.
(1)求证:
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fbe6cd1343fc0165e798f98bed512af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92737447736ec959a4bc88ed239be5ea.png)
![](https://img.xkw.com/dksih/QBM/2012/2/20/1570753623334912/1570753628872704/STEM/68bb8b85c5c44735beff757d3db9a81f.png?resizew=14)
![](https://img.xkw.com/dksih/QBM/2012/2/20/1570753623334912/1570753628872704/STEM/32d37446365f473ba4213225f0ab1fe8.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521002bec94a87a6699f17fbb9403fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/793cceaa99ae46d3b17e83b939ec4fe1.png)
(Ⅰ)当点A在
![](https://img.xkw.com/dksih/QBM/2012/2/20/1570753623334912/1570753628872704/STEM/68bb8b85c5c44735beff757d3db9a81f.png?resizew=14)
(Ⅱ)自点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8492e60c22fad5804368e7e431ceb9a1.png)
![](https://img.xkw.com/dksih/QBM/2012/2/20/1570753623334912/1570753628872704/STEM/32d37446365f473ba4213225f0ab1fe8.png?resizew=13)
记为D,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f72ea167c6a052c184e39dfaaa91e9.png)
![](https://img.xkw.com/dksih/QBM/2012/2/20/1570753623334912/1570753628872704/STEM/8b5dceeeda02475c8a79d3a3853d4e75.png?resizew=20)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdd9e314a9d0954be3d0a7b5191b316b.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a4385ff44b45af2df6c666d0577976.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06cddbe50491981189904e064c91bf70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c178c9abab25de6a69a3d5b98c55bc6.png)
![](https://img.xkw.com/dksih/QBM/2012/2/20/1570753623334912/1570753628872704/STEM/1e29bc23-ced6-47cf-8083-86eb995ffca9.png?resizew=176)
您最近一年使用:0次
解题方法
7 . 已知动圆过定点
,且在
轴上截得弦长为
.
(1)求动圆圆心的轨迹
的方程;
(2)已知点
为一个定点,过
作斜率分别为
、
的两条直线交轨迹
于点
、
、
、
四点,且
、
分别是线段
、
的中点,若
,求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bacfc149ede71417fa599c21b5a84cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
(1)求动圆圆心的轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468f1f292d17a3a40ff1cafa0a163552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae3ab048431fdc75f9a2eef2a762f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/2015/12/29/1572401251803136/1572401258078208/STEM/ab7ad24a730f4788a78cf27e0e797e07.png?resizew=123)
您最近一年使用:0次
2014·安徽芜湖·二模
解题方法
8 . 在平面直线坐标系XOY中,给定两点A(1,0),B(0,-2),点C满足
,且
.
(1)求点C的轨迹方程.
(2)设点C的轨迹与双曲线
(
)相交于M,N两点,且以MN为直径的圆经过原点,求证:
是定值.
(3)在(2)条件下,若双曲线的离心率不大于
,求该双曲线实轴的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69baa2692da8eab9cb9259c3d2b04378.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048745938798b407c1dac9b3c48a0b8f.png)
(1)求点C的轨迹方程.
(2)设点C的轨迹与双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80235d30a95d6cf370a71589ba2101d8.png)
(3)在(2)条件下,若双曲线的离心率不大于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
您最近一年使用:0次