解题方法
1 . 已知双曲线
的左、右焦点分别为
、
,过
的直线
交双曲线的右支于
、
两点.点
满足
,且
,若
,则双曲线的离心率是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ea93dd673b98c380ba61bc5ea70d1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9ad22d5fd6ebd70aa6461675211fab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adda13780372840f0fdae532e8a557e2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
2 . 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)
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3 . 已知点
,若
为双曲线
的右焦点,
是该双曲线上且在第一象限的动点,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f429ffba234d522086fd594674ba6cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1fa37c4c826b5dcfebe86ab6177906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a36e853273b9470646caf9ed5442f538.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
4 . 已知双曲线
,
分别为双曲线的左右焦点,
为双曲线
上一点,且位于第一象限,若三角形
为锐角三角形,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0017262e45089093f70001cae2c60257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.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/8112f9185c7d48b015d9cd0525616b31.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-06-21更新
|
543次组卷
|
8卷引用:福建省福州市闽江学院附属中学2023届高三上学期半期考试数学试题
5 . 已知双曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
的右焦点为
,
为坐标原点,以
为圆心,
为半径的圆与双曲线
的一条渐近线交于
、
两点,且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b981a38ddc94e2806871d7e8a17290d.png)
____________ .
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/313fee58e284dfa5269f6825ec7fd03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/b9c2aed6ad0bc638eab5b4a52e8a5b55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5fe5788ff8f39c8bbc50e17c88d87f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b981a38ddc94e2806871d7e8a17290d.png)
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