1 . 若
,
分别是双曲线
:
的右支和圆
:
上的动点,且
是双曲线
的右焦点,则
的最小值为( )
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c477e5ade921ffa8377c4719319380ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029db8894840c044466ce047bee396d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b2ddeb37779605287cef2747cfeaa3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 双曲线
的右焦点坐标为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5964c9cef1f322dee4b2831487d92912.png)
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解题方法
3 . 已知
是双曲线C:
的左、右焦点,直线l是C的一条渐近线,
垂足为P.若C的离心率为
,则
的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd23abed96aa3491de17878607c8745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54279c4529827581bbeaa76c1beb437.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 双曲线
的焦距为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565bc68d208cd5e0c90a32851faf3814.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 已知双曲线
的右焦点为 F,过 F 作直线分别与双曲线的两渐近线相交于A,B 两点,且
,
,则该双曲线的离心率为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c29bab2a74ca02d30e0deed068b042f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f666d9dc6c41306cfdcac4ba868ce36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cccf1ca67f6686a87d1cac5465184148.png)
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2024-05-04更新
|
567次组卷
|
3卷引用:四川省南充市嘉陵第一中学2023-2024学年高二下学期4月期中考试数学试题
四川省南充市嘉陵第一中学2023-2024学年高二下学期4月期中考试数学试题河南省名校联盟2023-2024学年高三下学期教学质量检测(3月)数学试卷(已下线)第1题 双曲线的离心率问题(5月)(压轴小题)
2024·全国·模拟预测
名校
解题方法
6 . 过双曲线
的右焦点作
轴的垂线l,l与双曲线的两条渐近线围成正三角形,则双曲线的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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7 . 形如
的函数图象均为双曲线,则双曲线
的一个焦点坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88f5465d01cad2a69c5799eeead052b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2acae5c7d321da2d4958935ae38220d.png)
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8 . 已知
,则关于双曲线
与双曲线
,下列说法中正确的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bed51d0adb6cdda5815f8ca625f6c46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8664e94c5793590f8d478e20908317c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de760751fe524fb34aa777965e0a6ffc.png)
A.有相同的焦距 | B.有相同的焦点 |
C.有相同的离心率 | D.有相同的渐近线 |
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解题方法
9 . 已知双曲线
,
,
分别为其左、右焦点.
,
的坐标和双曲线
的渐近线方程;
(2)如图,
是双曲线
右支在第一象限内一点,圆
是△
的内切圆,设圆与
,
,
分别切于点
,
,
,当圆
的面积为
时,求直线
的斜率;
(3)是否存在过点
的直线
与双曲线
的左右两支分别交于
,
两点,且使得
,若存在,求出直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67d334f7926abd3ec6782534c5dab9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5a8e1bc9748e5519dcd9981b7eb251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b3a91ccf6028608cd03df7072f6536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
(3)是否存在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.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/d981eca505f4e7cb144e24803f5cb88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2024-04-11更新
|
595次组卷
|
2卷引用:上海市朱家角中学2023-2024学年高二下学期第二阶段质量监测数学试题
名校
10 . 设m为常数,若点
是双曲线C:
的一个焦点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551b3901b8d96e193947d239eb3b2e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d06f1cf6c78b0ef0592f05899488272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次