已知双曲线
的左、右焦点分别为
,点A在双曲线C上,点B在y轴上,
,则双曲线C的离心率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d09618f2c296395ff7d7410f4e6189.png)
23-24高三上·安徽池州·期末 查看更多[2]
更新时间:2024-03-12 12:37:47
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【知识点】 求双曲线的离心率或离心率的取值范围
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【推荐1】已知双曲线
的离心率是
.则
=_________
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【推荐2】已知椭圆
:
的左、右焦点分别为
,
,若
上存在点
使得
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:
的离心率的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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