焦点在x轴上的椭圆
的离心率为
,则实数k的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85fd4b213cfb4291fed3abd3ffa95cad.png)
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21-22高二上·广东佛山·阶段练习 查看更多[4]
广东省佛山市南海区大沥高级中学2021-2022学年高二上学期阶段检测二(月考)数学试题(已下线)第03练 椭圆-2022年【寒假分层作业】高二数学(苏教版2019选择性必修第一册)山东省枣庄市枣庄市第八中学2021-2022学年高二上学期12月月考数学试题河北省张家口市第一中学2021-2022学年高二上学期12月月考数学试题
更新时间:2021-12-09 16:13:35
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【推荐1】下列命题正确的是_______ (写出正确的序号)
①已知
、
,
,则动点
的轨迹是双曲线左边一支;
②已知椭圆
的长轴在
轴上,若焦距为
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的值是
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③抛物线
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①已知
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②已知椭圆
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③抛物线
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【推荐2】已知椭圆
,
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【推荐1】过原点作一条倾斜角为
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【推荐2】过双曲线
的左焦点F作圆
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