如图,已知圆
和双曲线
,记
与
轴正半轴、
轴负半轴的公共点分别为
、
,又记
与
在第一、第四象限的公共点分别为
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/c029ad3b-6a41-4d37-bd80-4021b95c0c23.png?resizew=163)
(1)若
,且
恰为
的左焦点,求
的两条渐近线的方程;
(2)若
,且
,求实数
的值;
(3)若
恰为
的左焦点,求证:在
轴上不存在这样的点
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d93fa33953259b41ebfee72c9bf8d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9f470b99c86d5c18ba3e3230056e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82a5421934348a612982ca099723b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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://staticzujuan.xkw.com/quesimg/Upload/formula/f82a5421934348a612982ca099723b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4455cb5ef8fa02f8740a01ea658ed7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/c029ad3b-6a41-4d37-bd80-4021b95c0c23.png?resizew=163)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8176754726d2194c890e80df1a1f1c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4455cb5ef8fa02f8740a01ea658ed7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4455cb5ef8fa02f8740a01ea658ed7fb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8176754726d2194c890e80df1a1f1c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f730f3c637144b21d295d0037cd73a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4455cb5ef8fa02f8740a01ea658ed7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eff086bba43377f6da713d43bf052f5.png)
2019·上海长宁·三模 查看更多[4]
上海市延安中学2018-2019学年度高三5月月考数学试卷2019届上海市延安中学高三三模数学试题(已下线)重难点06 解析几何-2021年高考数学【热点·重点·难点】专练(上海专用)(已下线)3.2 双曲线(难点)(课堂培优)-2021-2022学年高二数学课后培优练(苏教版2019选择性必修第一册)
更新时间:2020-03-15 13:00:03
|
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解答题-问答题
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较难
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解题方法
【推荐1】已知双曲线
的虚轴长为
,左焦点为F.
(1)设O为坐标原点,若过F的直线l与C的两条渐近线分别交于A,B两点,当
时,求
的面积;
(2)设过F的直线l与C交于M,N两点,若x轴上存在一点P,使得
为定值,求出点P的坐标及该定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e298844bde6a0208905c03decf4a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(1)设O为坐标原点,若过F的直线l与C的两条渐近线分别交于A,B两点,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8adb2e669e789bb6eb154f7d1defb7bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(2)设过F的直线l与C交于M,N两点,若x轴上存在一点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023db2781137eaee650fc7848c6fd24a.png)
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【推荐2】已知双曲线T与椭圆
共焦点,且焦点到T的渐近线的距离为
.
(1)求双曲线T的渐近线方程;
(2)已知过点
的直线l与双曲线T交于P,Q两点,线段PQ的中点为E,设过E,F的圆的半径为r.证明:当圆心在x轴上时,
是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b87c183a0f86870e61f8a4b6de9df97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求双曲线T的渐近线方程;
(2)已知过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be92f0e0012a7696c78e3e00513edefd.png)
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解答题-问答题
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(0.4)
名校
解题方法
【推荐1】已知直线
是双曲线
的一条渐近线,点
在双曲线C上,设坐标原点为O.
(1)求双曲线C的方程;
(2)若过点
的直线l与双曲线C交于R、S两点,若
,求直线l的方程;
(3)设
在双曲线上,且直线AM与y轴相交于点P,点M关于y轴对称的点为N,直线AN与y轴相交于点Q,问:在x轴上是否存在定点T,使得
?若存在,求出点T的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5c2e64358e0ec7aa142c336d970306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
(1)求双曲线C的方程;
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44bdbc62c678a23e5e7fc8c34ffbf257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347a42007234ea5c961c00f933357425.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a8c0067346bae5e4604c9b7995873a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a8d8791d09d033da072aad3761142c.png)
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【推荐2】平面上一动点
满足
.
(1)求P点轨迹
的方程;
(2)已知
,
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于点Q,求实数m使得
恒成立,并证明:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ee82573986d4fa6a7ee1b5f397edae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc236056fcce79b628607515d0e8d83.png)
(1)求P点轨迹
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(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2375a27ead9549550676d4e6a2b47243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbb898663f98b8400a897913b4d3102.png)
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【推荐1】已知两定点
,满足条件
的点
的轨迹是曲线
,直线
与曲线
交于
两个不同的点.
(1)求曲线
的方程;
(2)求实数
的取值范围;
(3)设点
在直线
上,过
的两条不同的直线分别交曲线
于
和
两点,且
,求直线
与直线
的斜率之和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01db0118fedcf6fcdde99ee28fe5618a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea7d1dfba97c89779f9f8c5ae5949f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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(1)求曲线
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(3)设点
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f5f4ad0caac5a0fecb64f3908d2290.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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解题方法
【推荐2】已知双曲线
的离心率为2,
的右焦点
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(1)求
的标准方程.
(2)经过点
且斜率不为零的直线
与
的两支分别交于点
,
.
①若
为坐标原点,求
的取值范围;
②若
是点
关于
轴的对称点,证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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(1)求
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(2)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ace585d3cc2e113a0927cdf9e56756a.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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