已知双曲线
的右顶点为A,点B的坐标为
.
(1)设双曲线
的两条渐近线的夹角为
,求
.
(2)设点D是双曲线
上的动点,若点N满足、
,求点N的轨迹方程.
(3)过点B的动直线l交双曲线
于P、Q两个不同的点,M为线段PQ的中点,求直线AM斜率的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6406cb9bb3334608b4323bb3762f8e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38620d68461307e424923b903ab518f7.png)
(1)设双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
(2)设点D是双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166f1b2e676fa107a9260e7b62cb57a0.png)
(3)过点B的动直线l交双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
18-19高二上·上海·期末 查看更多[3]
上海市控江中学2018-2019学年高二上学期期末质量调研数学试题上海市控江中学2022届高三上学期12月月考数学试题(已下线)专题18 《圆锥曲线与方程》中的动点动直线问题(2)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
更新时间:2019-11-16 15:46:38
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【推荐1】已知椭圆C:
=1(a>b>0)的离心率为
,F1,F2是椭圆的两个焦点,P是椭圆上任意一点,且△PF1F2的周长是8+2
.
(1)求椭圆C的方程;
(2)设圆T:(x-2)2+y2=
,过椭圆的上顶点M作圆T的两条切线交椭圆于E,F两点,求直线EF的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2aa6ee9b173abc2191c1c19c5392ff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7974d314172eb725e842432330fa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24291703cdec1e3d85e96779ed3c3647.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/18/c012a049-f90f-4633-a3c4-b8ed5233657b.png?resizew=201)
(1)求椭圆C的方程;
(2)设圆T:(x-2)2+y2=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c08788beb1cb729a9c9fd59d2be3e6.png)
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【推荐2】已知直线
过定点
,
与
轴正半轴、
轴正半轴分别交于
两点,且
.
(1)求直线
的倾斜角
的值;
(2)若以
为圆心的圆与直线
相切,求圆
的半径
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320744c7232b7deb546fadb0948cf61c.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)若以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743c08b3555fca31cd299d6d90242fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
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【推荐1】在平面直角坐标系中,定义
为两点
、
的“切比雪夫距离”,例如:点
,点
,因为
,所以点
与点
的“切比雪夫距离”为
,记为
.
(1)已知点
,B为x轴上的一个动点,
①若
,写出点B的坐标;
②直接写出
的最小值
(2)求证:对任意三点A,B,C,都有
;
(3)定点
,动点
满足
,若动点P所在的曲线所围成图形的面积是36,求r的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a7ccf5858c4bee028cd4f0c7a8537f.png)
![](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/20c0c770ededa07b186fd5c34eb16ed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c013f75decb1d36232584f7fe5a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cea36f1254a09314452a1c7367ffc79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ed257c87fa2ad31f51eee657ca836a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdcae7d173618ef64a8bed8e7017aa8b.png)
(1)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62f772c3845894acb33c695f4e235fbc.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/886886a08788351e7f7c20366bf9eec1.png)
②直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bcb4828b16c8e845492f1a53ddd9a9.png)
(2)求证:对任意三点A,B,C,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8c63712c9409f143366ab000a3ebd7.png)
(3)定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132668fc41c8266ba917dc5b4995c6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd8eb385fef42c9dc2840530726edfb.png)
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【推荐2】已知点P(1,0)与圆C:(x+1)2+(y﹣1)2=4.
(1)设Q为圆C上的动点,求线段PQ的中点M的轨迹方程;
(2)过点P(1,0)作圆C的切线l,求l的方程.
(1)设Q为圆C上的动点,求线段PQ的中点M的轨迹方程;
(2)过点P(1,0)作圆C的切线l,求l的方程.
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解题方法
【推荐1】如图,双曲线
的两条渐近线与圆
在
轴的上方部分交于
,
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/431b355d-a96c-418d-ad02-8c26b980af85.png?resizew=174)
(1)已知
,
两点的横坐标
和
恰为关于
的方程
的两个根,求
,
的值;
(2)如果线段
的长为2,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7be34d2e1852bcbc93bf98ddfddc99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa44080024ddecbba39ee4297fe66d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/431b355d-a96c-418d-ad02-8c26b980af85.png?resizew=174)
(1)已知
![](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/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a094d2ab89ee1a06ab12e04292307fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)如果线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】已知双曲线
:
.
(1)求双曲线的离心率
与渐近线方程;
(2)若椭圆
与双曲线有相同的焦点且经过点
,求椭圆
的标准方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dad0c75ce33673ec4c425896e8619e4.png)
(1)求双曲线的离心率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2ed5fcb9410be4ca5d576faaebd8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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