14-15高二上·黑龙江牡丹江·期中
解题方法
1 . 在平面直角坐标系
中,已知椭圆
:
(
)的离心率
且椭圆
上的点到点
的距离的最大值为3.
(Ⅰ)求椭圆
的方程;
(Ⅱ)在椭圆
上,是否存在点
,使得直线
:
与圆
:
相交于不同的两点
、
,且
的面积最大?若存在,求出点
的坐标及对应的
的面积;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9374d3462754e846cbb0f7dd5fd28277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0113329129e93e14f7e115ef54f3d06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac4ec5701547d4c4de88a03e584f66b.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)在椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dfc8bebac5b5356e56cff70028c5cb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cb619d62d5f4f2dd2fe70628f0d50a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.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/056fca6ea1674a2ccc2621fb15ac1a3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056fca6ea1674a2ccc2621fb15ac1a3c.png)
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2016-12-03更新
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6卷引用:2014-2015学年黑龙江省牡丹江一中高二上学期期中考试文科数学试卷
(已下线)2014-2015学年黑龙江省牡丹江一中高二上学期期中考试文科数学试卷【全国市级联考】陕西省宝鸡市2018届高三质量检测(三)数学(理)试题专题6.2 圆锥曲线的综合应用(范围 定点 定值 最值问题)[理]-《备战2020年高考精选考点专项突破题集》浙江省绍兴市上虞区2023-2024学年高二上学期期末质量调测数学试题(已下线)专题42 盘点圆锥曲线中的面积问题——备战2022年高考数学二轮复习常考点专题突破(已下线)专题16 盘点基本不等式五种交汇问题-2
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2 . 已知椭圆
短轴上的两个三等分点与两焦点构成一个正方形.
(1)求椭圆的离心率;
(2)若直线
为圆
的一条切线,
与椭圆
交于
两点,且
(
为坐标原点),求椭圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
(1)求椭圆的离心率;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc7e7df010fe214f3734ab5cebb321c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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解题方法
3 . 已知椭圆
的左顶点为
,右焦点为
,点
在椭圆上且
,
,则该椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6861a132f489e94a9edfb2c77ca089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c8411bf09ef57b7bab69084810d814.png)
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2020-07-28更新
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5卷引用:四川省泸县第四中学2020-2021学年高二上学期第二次月考数学(文)试题
四川省泸县第四中学2020-2021学年高二上学期第二次月考数学(文)试题 四川省泸县第四中学2020-2021学年高二上学期第二次月考数学(理)试题 四川省遂宁市船山区第二中学校2020届高三高考适应性(三)考试数学(理科)试卷(已下线)第38练 椭圆-2021年高考数学(理)一轮复习小题必刷(已下线)第二章 平面解析几何 单元测试-2023-2024学年高二数学同步精品课堂(人教B版2019选择性必修第一册)
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解题方法
4 . 已知
,
是椭圆
的左,右焦点,若满足
的点M总在椭圆内部,则椭圆离心率的取值范围是( )
![](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/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f861aa02b8b71a3c525e9705836db7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知双曲线C1的渐近线是
x±2y=0,焦点坐标是F1(-
,0)、F2(
,0).
(1)求双曲线C1的方程;
(2)若椭圆C2与双曲线C1有公共的焦点,且它们的离心率之和为
,点P在椭圆C2上,且|PF1|=4,求∠F1PF2的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11b53e957bf1f2cfb96b7e397988014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11b53e957bf1f2cfb96b7e397988014.png)
(1)求双曲线C1的方程;
(2)若椭圆C2与双曲线C1有公共的焦点,且它们的离心率之和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/815b7f3e1ff2609fab6524372cc3a9fc.png)
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6 . 如图,
,
分别是椭圆
的左右焦点,以
为直径的圆
与椭圆交于点
,
,
,
,若
所在直线垂直平分线段
,则椭圆的离心率为______ .
![](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/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d107e77106ff1a9cb76b504bbc99bf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/840c6922-c9f7-4795-bf73-2dc3edd6065d.png?resizew=236)
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|
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2卷引用:【市级联考】四川省眉山市2018-2019学年高二上学期期末教学质量检测理科数学试题
2014·河北唐山·一模
解题方法
7 . 椭圆C:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
的离心率为
,
为C的长轴上的一个动点,过P点斜率为
的直线l交C于A、B两点.当m=0时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0ed28c7bbb0738f0c38966f1e516ed.png)
(1)求C的方程;
(2)求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434249d6640b0c1a712d215cf8b83d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84bfec4efcc9f0e656d6864daaaef55d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0ed28c7bbb0738f0c38966f1e516ed.png)
(1)求C的方程;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd67e60d0e2614c3b8bee9101f1f5263.png)
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解题方法
8 . 已知椭圆
:
的左焦点为
,
与过原点的直线相交于
、
两点,连接
、
,若
,
,则
的离心率
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c507610f462120218e2cd1894c957eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/653eee275411246e387942e1375104e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
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2020-03-24更新
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3卷引用:四川省蓉城名校联盟2018-2019学年度下学期高二期中联考文数试题
解题方法
9 . 已知椭圆
的左焦点为
,
轴上的点
在椭圆外,且线段
与椭圆
交于点
,若
,
(其中
为坐标原点),则椭圆
的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0377a8ae8695901374ab0c733f1927ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba17bb8bc41bd3c66b392f2f60bcfc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 设
为椭圆
(
)上一点,
,
为焦点,如果
,
,那么椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.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/725117146edfa45d4507da0aac1a780f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0097a28bd2644477a460f542c17771.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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