名校
解题方法
1 . 已知焦点在
轴上的椭圆
的焦距等于
,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e366063bb6ed74c572c23744ce54f68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() ![]() | B.![]() ![]() | C.![]() | D.![]() |
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2023-02-16更新
|
765次组卷
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4卷引用:四川省德阳市广汉中学2022-2023学年高二下学期第一次月考数学(理)试题
四川省德阳市广汉中学2022-2023学年高二下学期第一次月考数学(理)试题四川省南部中学2023届高考模拟检测(五)理科数学试题(已下线)专题20 椭圆-2(已下线)第01讲 3.1.1椭圆及其标准方程(2)
名校
解题方法
2 . 已知椭圆
的右焦点F与抛物线
的焦点相同,椭圆C的离心率为
.
(1)求椭圆C方程;
(2)若直线
交椭圆
于
、
两点,求三角形
面积的最大值(其中
为坐标原点)﹒
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆C方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a8d6991873e79b298984a95b8954b9.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161ea3eaa2e28747507c1c0e4a7b39f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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2022-10-13更新
|
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3卷引用:四川省德阳市第五中学2022-2023学年高二上学期10月月考数学(文)试题
名校
3 . 若方程
表示焦点在y轴上的椭圆,则实数m的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68b0b33f1eed785575aa234f8532492.png)
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2022-10-13更新
|
783次组卷
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3卷引用:四川省德阳市第五中学2022-2023学年高二上学期10月月考数学(文)试题
名校
4 . 已知椭圆
的长轴长为4,点
在
上.
(1)求椭圆
的方程;
(2)设直线
与
交于
,
两点,若
(
为坐标原点),求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb41790d31c43cd8eb13c5305f8f242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a8d6991873e79b298984a95b8954b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22905409f038387f0e954a47384b60a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2020-11-02更新
|
349次组卷
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7卷引用:四川省德阳市广汉中学2022-2023学年高二下学期第一次月考数学(理)试题
解题方法
5 . 已知椭圆
经过点
,离心率
.
(1)求椭圆
的方程;
(2)设点B为椭圆与
轴的交点,点C为线段AB的中点,点P是椭圆
上的动点(异于椭圆顶点)且直线PA,PB分别交直线OC于M,N两点,问
是否为定值?若是,求出定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b76e364a93cd78537c6c97b88021f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd4da08956db1f206c8ea026f4e52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)设点B为椭圆与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585fbce740644acb7e02d90b18c7992f.png)
您最近一年使用:0次
6 . 已知椭圆
:
的离心率为
,且过点
,
,
是椭圆
上异于长轴端点的两点.
(1)求椭圆
的方程;
(2)已知直线
:
,且
,垂足为
,
,垂足为
,若
,且
的面积是
面积的5倍,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7900d79727bddd99e8a74ebe09d2945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224d30ca84f1aeeeda7a718e751a4925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca717072d24c0e6fda2bb0d9c19b406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeba4806d9a03f7beb2f11d1d714bf15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40540618c5b9bb0de570d4c742efe648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4195d3b83ae1f78801a9b6b4e35311f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb961bd7db3adb76af2d4cedb611bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb961bd7db3adb76af2d4cedb611bd7.png)
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2017-09-25更新
|
867次组卷
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4卷引用:四川省德阳市第五中学2022-2023学年高二下学期3月月考数学(文)试题