名校
1 . 双曲线
上的点
到左焦点的距离为9,则
到右焦点的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad47527f61f73c6139c786741bbb9130.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.15 | B.3 | C.3或15 | D.5或12 |
您最近一年使用:0次
2023-12-03更新
|
1366次组卷
|
7卷引用:江西省丰城中学2023-2024学年高一上学期12月月考数学试题
名校
2 . 已知双曲线
的左右两个焦点分别是
,双曲线上一点
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e203545563ef6c33968cd9fab532638e.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cfd62f2cc0aaea9552e6eb5fe1499e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0f128d08df53efd55ce7f3822991e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e203545563ef6c33968cd9fab532638e.png)
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解题方法
3 . 设k为实数,已知双曲线
的离心率
,则k的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058dd171cbf06a99320712bfed47d477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96b98f261fb8b03d05da07d91e59ccc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
4 . 设双曲线C:
的左焦点和右焦点分别是
,
,点A是C右支上的一点,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2345c4a372c8143281fbecca78f451b.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/64bd7d0dd109d61700df09b3ae366001.png)
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