解题方法
1 . 已知双曲线
,当
变化时,下列关于双曲线
说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f2ae87d08d3ab2fc0d6bc2e02d13d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.顶点坐标不变 | B.焦距不变 |
C.离心率不变 | D.渐近线不变 |
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2卷引用:2019届百师联盟全国高三冲刺考(四)全国 I 卷数学(理)试题
12-13高二·全国·课后作业
名校
2 . 中心在原点,焦点在x轴上的一个椭圆与一双曲线有共同的焦点
、
,且
,椭圆的长半轴与双曲线的半实轴之差为4,离心率之比为3∶7,求这两条曲线的方程.
![](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/eda9e9bbe767ba0ec5c622c7cc0745ed.png)
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2020-02-09更新
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6卷引用:重庆市北碚区2019-2020学年高二11月联合性测试数学试题
解题方法
3 . 记双曲线
的左、右焦点分别为
、
,点
在双曲线
的渐近线
上,点
、
关于
轴对称.若
,
,其中
、
、
分别表示直线
、
、
的斜率,则双曲线
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8bffbd5970f9dfbd21dced10428778a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8621076f31cdd28e0b053d0a78bc8d47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5bec479c5994f3fbde22354105185d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/313effe6a47fbaa290a2bfabd038529c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-23更新
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2卷引用:2020届河南省焦作市高三上学期第二次模拟考试数学(理)试题
4 . 已知双曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
的左、右焦点分别为
,过
作双曲线
的一条渐近线的垂线
,垂足为
,直线
与双曲线
的左支交于
点 ,且
恰为线段
的中点,则双曲线
的离心率为 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4e9ee390c8211b27fc8f9bcf6af934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
5 . 已知双曲线
的左右焦点分别为
,
,以原点
为圆心,
为半径的圆与双曲线
的右支相交于
,
两点,若四边形
为菱形,则双曲线
的离心率为( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/a868e411-aa2d-4783-82c8-d2a089a4c5f8.png?resizew=179)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef66f4832adc43902055a7e6d258037.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb6bc32483b9b7049dd49bb25c99c78.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/20fa697a4a24be4600f6c674a0ff6446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/a868e411-aa2d-4783-82c8-d2a089a4c5f8.png?resizew=179)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
6 . 如图:已知双曲线
中,
为左右顶点,
为右焦点,
为虚轴的上端点,若在线段
上(不含端点)存在不同的两点
,使得
构成以
为斜边的直角三角形,则双曲线离心率
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb722e537fa8367505dfb0fad986e29d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a730cb4db9886cc620c806b9ce3c25b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/ae42886b-2cac-4c95-95cb-42fe07281124.png?resizew=177)
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名校
7 . 设
、
分别为双曲线
的左、右顶点,
、
是双曲线
上关于
轴对称的不同两点,设直线
、
的斜率分别为
、
,若
,则双曲线
的离心率
是( )
![](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/6a0d90b0b275bc85b16a918a3dc697fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb20cf7da78670140c60578ce7d82cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:河北省大名县第一中学2019-2020学年高二(清北组)上学期12月月考数学试题
8 . 过双曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
的右焦点
作渐近线的垂线
,垂足为
,
与
轴交于点
,若
,且双曲线的离心率为
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f311053d11884b1a21d5f9b5724996c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8871b7dffb585dc6ba82a3ffc9f5ca83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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8卷引用:贵州省毕节市2019-2020学年高三年级诊断性考试(二)文科数学试题
贵州省毕节市2019-2020学年高三年级诊断性考试(二)文科数学试题贵州省毕节市2019-2020学年高三年级诊断性考试(二)理科数学试题重庆市渝北区松树桥中学2020-2021学年高二上学期11月月考数学试题(已下线)理科数学-2020年高考押题预测卷02(新课标Ⅲ卷)《2020年高考押题预测卷》(已下线)第十八篇离心率02—2020年高考数学选填题专项测试(文理通用)(已下线)专题11 双曲线及其性质-2020年高考数学(理)母题题源解密(全国Ⅲ专版)(已下线)专题14 双曲线及其性质-2020年高考数学(文)母题题源解密(全国Ⅲ专版)(已下线)专题 3.3 双曲线性质归类(3)
名校
9 . 在平面直角坐标系xoy中,若双曲线
的一条准线与两条渐近线恰能围成一个等边三角形,则该双曲线的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
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10 . 已知焦点在x轴的椭圆的离心率与双曲线3x2-y2=3的离心率互为倒数,且过点
,求:(1)求椭圆方程;
(2)若直线l:y=kx+m(k≠0)与椭圆交于不同的两点M,N,点
,有|MP|=|NP|,求k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2de52259b426acb42761fec59a7748.png)
(2)若直线l:y=kx+m(k≠0)与椭圆交于不同的两点M,N,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff7c1958692f6da2c4fbc3ac826bdb5.png)
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