解题方法
1 . 双曲线以椭圆
的焦点为焦点,它的离心率是椭圆离心率的2倍,求该双曲线的方程为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3160d5fcc82f49cfd08ff7c0fe8cb31e.png)
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解题方法
2 . 以椭圆
的长轴端点为焦点、以椭圆焦点为顶点的双曲线方程为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c763113a1fc48e8acc83787b8cd24eec.png)
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3 . 以椭圆的两个焦点和短轴两个顶点为四个顶点的椭圆方程为
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4 . 若椭圆
的一个焦点坐标为
,则实数
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb310da4ecca422169017ef85bde17af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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5 . 过点
且与椭圆
有相同焦点的椭圆方程是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a2985a1aadcd572f2a41c6c6649961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795b28d4816617d5f344dce62d7a533.png)
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6 . 椭圆
的焦距为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d86650634148aa9e4f03660f5d4355.png)
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7 . 已知椭圆
,过椭圆右焦点F的直线l交椭圆于A,B两点,交y轴于点P,设
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436830896877e1a9111e180d76da1432.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b747db7eaf469c6d1607e4b0d028299f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47378cacf998faffc9e12ff0866287d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0be1c3a0c4a850ba3b83544cdbb8e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436830896877e1a9111e180d76da1432.png)
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2024-01-20更新
|
354次组卷
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2卷引用:山东省日照市实验高级中学2023-2024学年高二上学期第二次阶段性考试(12月)数学试题
解题方法
8 . 设
,
为实数,已知经过点
的椭圆
与双曲线
有相同的焦距,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8932f1ed31c60da689945cb70362fc98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16f489ddbde5d7187e60d6db6c2f588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c8a3a2849e2f5bd29eb2e4f3fb2f74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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2024-01-04更新
|
415次组卷
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2卷引用:河南省郑州市钱学森实验学校2023-2024学年高二上学期第二次月考数学试题
9 . 如图,我们把由半椭圆
:
和半椭圆
:
合成的曲线称作“果圆”.
,
是曲线
的焦点,
是曲线
的焦点,则
的周长为______ .过
且斜率为
的直线
交曲线
于
两点,则
=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b15fd3defc2234d9c822f740fdec6ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95dde2ac65923a484c9bbda2fc274aee.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1282962a17a48a18edf733204054d67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69559cc63085775fd0802997db15c751.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1282962a17a48a18edf733204054d67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2401bc9c26cc3b0b8384c7139bd58fff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/04357ba2-c881-469a-bcdb-b2499b4340cf.png?resizew=165)
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10 . 已知椭圆
的焦点分别为
,点A,B在椭圆上,
于
,
,则椭圆的长轴长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02809764ac07f133bc85e60a1df1f8b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b0048d68801c3e6352828fb3efd4db.png)
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2023-12-11更新
|
420次组卷
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2卷引用:江苏省扬州市江都区丁沟中学2023-2024学年高二上学期12月月考数学复习练习