1 . 若实轴长为2的双曲线
上恰有4个不同的点
满足
,其中
,
,则双曲线C的虚轴长的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad29d7c31087e13e266793832af17bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de25799b89e589407065dae98d61d086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5a6ad215584ca01895369b13dadec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b47e7bf02b3ca16f7d96b9369e51a3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-08-01更新
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7卷引用:安徽省皖西南联盟2018-2019学年高二下学期期末联考数学(理)试题
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2 . 已知
是双曲线
:
上的一点,半焦距为
,若
(其中
为坐标原点),则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b813ff3a933281e90686cd659b292d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3898289d695f358d8bea752e9ba7b98.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-03-11更新
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3卷引用:【市级联考】湖北省恩施州2019届高三2月教学质量检测数学(理)试题
【市级联考】湖北省恩施州2019届高三2月教学质量检测数学(理)试题(已下线)专题28 双曲线-冲刺2020高考跳出题海之高三数学模拟试题精中选萃四川省绵阳南山中学实验学校2023届高考冲刺五(文科)数学试题
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3 . 已知点
,
,若曲线
上存在点
,使得
,则称曲线
为“
曲线”,给出下列曲线:①
;②
;③
;④
;⑤
.其中是“
曲线”的所有序号为_______________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.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/45293375bd6d5dd24ecd7bb0c6bb6895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d584deba2de24042daa75726c67803d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b16d1b1c4f6ae3b46ce8be922bf5186a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28123e129b6426c9a5f31ad8ec2465b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f1596d3e260ec2198058d1b94ed7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c28b4f0234b698f001e7dec787b4d44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d584deba2de24042daa75726c67803d9.png)
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