1 . 已知椭圆
:
的离心率
,左顶点为
,过点A作斜率为
的直线
交椭圆
于点
,交
轴于点
,
点为坐标原点.
(1)求椭圆
的方程;
(2)已知
为
的中点,是否存在定点
,对于任意的
都有
,若存在,求出点
的坐标;若不存在说明理由;
(3)若过
点作直线
的平行线交椭圆
于点
,求
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/d5c7316976a221c051a2c14df80b1347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a525534689bd2701205d4ab17574c39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799abb64fd7bfce9dfa7228aa460564.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799abb64fd7bfce9dfa7228aa460564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0297c11050f2e39f82bb2cdf810d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(3)若过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31468393c4433f29096f13b20258fda4.png)
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2018-02-09更新
|
366次组卷
|
3卷引用:【校级联考】天津市七校(静海一中、宝坻一中、杨村一中等)2018-2019学年高二上学期期末考试数学试题
名校
2 . 已知两正实数
,满足
,则
的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b40b1544e62be8b9e9f4dc9f2c0c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/899b89438f9dcb97dd190c2714aac3e3.png)
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2017-10-12更新
|
2509次组卷
|
3卷引用:天津市耀华中学2018届高三上学期第二次月考数学(理)试题
名校
解题方法
3 . 设实数
,若对于任意
,不等式
恒成立,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffebc30db51fc3380a751b95fe055a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
4 . 已知数列
的前
项和
满足:
(
为常数,且
).
(1)求
的通项公式;
(2)设
,若数列
为等比数列,求
的值;
(3)在满足条件(2)的情形下,设
,数列
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54783de5a89cf309075f413ad97f0594.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b38b6bba834f9a6bf59f68cd1a78c25.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623827ce023ef21087f67bafc87758b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在满足条件(2)的情形下,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53fe097bf1b1e48f2369657e5017d5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94bbce490db884e0198bc28f4766eb1b.png)
您最近一年使用:0次
名校
5 . 设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1425d8eba3850092fe30327ef4437f42.png)
(1)若
在点
处的切线斜率为
,求
的值;
(2)求函数
的单调区间;
(3)若
,求证:在
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1425d8eba3850092fe30327ef4437f42.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea59cee971344ed593ff082a65d177c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92be82894508d5fd942f8933e736b728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62cf62a02057141c8d8665aea1bd9ba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
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2017-11-27更新
|
811次组卷
|
2卷引用:天津市实验中学2018届高三上学期期中(第三阶段)考试数学(理)试题
名校
6 . 已知椭圆
:
的离心率为
,以椭圆长、短轴四个端点为顶点为四边形的面积为
.
![](https://img.xkw.com/dksih/QBM/2017/11/18/1819704189804544/1821472443867136/STEM/460cf14a35224dfcbe2ab9c90eb6f018.png?resizew=236)
(Ⅰ)求椭圆
的方程;
(Ⅱ)如图所示,记椭圆的左、右顶点分别为
、
,当动点
在定直线
上运动时,直线
分别交椭圆于两点
、
,求四边形
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/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://img.xkw.com/dksih/QBM/2017/11/18/1819704189804544/1821472443867136/STEM/460cf14a35224dfcbe2ab9c90eb6f018.png?resizew=236)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)如图所示,记椭圆的左、右顶点分别为
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1bd115fa8e48e214fd2b90b0df6a10.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/e8d4ab45e8e8f0084d8d90a4c1233d86.png)
您最近一年使用:0次
2017-11-20更新
|
3771次组卷
|
12卷引用:天津市第一中学2017-2018学年高二上学期期末考试数学(理)试题2
天津市第一中学2017-2018学年高二上学期期末考试数学(理)试题2湖南师范大学附属中学2018届高三上学期月考试卷(三)(11月)数学理试题广东省汕头市金山中学2018-2019学年高三上学期期末数学(理)试题重庆市第八中学校2018-2019学年高二上学期期末数学(理)试题重庆市南岸区2019-2020学年高二上学期期末数学试题2019届湖南省怀化市高三第三次模拟数学(文)试题内蒙古鄂尔多斯衡水实验中学2019-2020学年第二学期高二数学理科期末考试试题湖北省荆州市沙市中学2020-2021学年高二上学期期末数学试题(已下线)第05章+椭圆(B卷提升卷)-2020-2021学年高二数学上学期同步单元AB卷(苏教版,新课改地区专用)(已下线)第3章 椭圆方程及性质(B卷·提升能力)-2021-2022学年高二数学同步单元AB卷(苏教版2019选择性必修第一册)【学科网名师堂】广东省广州市六中2021-2022学年高二下学期期中数学试题第3章 椭圆方程及性质(培优卷)-【满分计划】2022-2023学年高二数学阶段性复习测试卷(苏教版2019选择性必修第一册)
7 . 如图,已知椭圆
的离心率为
,以该椭圆上的点和椭圆的左、右焦点
为顶点的三角形的周长为
.一等轴双曲线的顶点是该椭圆的焦点,设
为该双曲线上异于顶点的任一点,直线
和
与椭圆的交点分别为
和
.
![](https://img.xkw.com/dksih/QBM/2010/6/9/1569759219933184/1569759224668160/STEM/ba2f9736-71c2-4b0c-95ad-f72feb0fe827.png)
(Ⅰ)求椭圆和双曲线的标准方程;
(Ⅱ)设直线
、
的斜率分别为
、
,证明
;
(Ⅲ)是否存在常数
,使得
恒成立?若存在,求
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bf432364b03f0adb997d9a92330e12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1edc33277bf11da7b67816efcdb7286.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/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a1d152d0f62cb4c70e7f9f23d65427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79e4561c94ea0cc8540c0aca9e54a61.png)
![](https://img.xkw.com/dksih/QBM/2010/6/9/1569759219933184/1569759224668160/STEM/ba2f9736-71c2-4b0c-95ad-f72feb0fe827.png)
(Ⅰ)求椭圆和双曲线的标准方程;
(Ⅱ)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d34e97fbacefc105891a04a2f4494c8a.png)
(Ⅲ)是否存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5581bee9f6324205863da318bf1153bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2019-01-30更新
|
3185次组卷
|
17卷引用:天津市河东区2024届高三上学期期末质量调查数学试题
天津市河东区2024届高三上学期期末质量调查数学试题2010年普通高等学校招生全国统一考试山东卷理科数学(已下线)2011—2012学年度黑龙江龙东地区第一学期高二期末理科数学试卷(已下线)2012届上海市七宝中学高三模拟考试理科数学(已下线)2011-2012学年福建省南平政和一中高二上学期期末考试理科数学试卷2015届福建省三明市一中高三上学期第二次月考理科数学试卷【全国百强校】江西省南昌市第二中学2018-2019学年高二上学期期中考试数学(理)试题安徽省滁州市民办高中2019-2020学年高二上学期期末数学(理)试题安徽省马鞍山市第二中学2019-2020学年高二下学期开学考试数学(理)试题(已下线)专题10 解析几何中两类曲线相结合问题(第五篇)-备战2020年高考数学大题精做之解答题题型全覆盖山东省临沂市部分学校2022届高三考前模拟训练数学试卷(二)浙江省“山水联盟”2022-2023学年高三上学期8月返校联考数学试题(已下线)专题13 极坐标秒解圆锥曲线 微点1 极坐标秒解圆锥曲线安徽省六安第二中学2022-2023学年高二下学期开学考试数学试题2.2双曲线单元检测-2022-2023学年高二上学期数学北师大版(2019)选择性必修第一册黑龙江省齐齐哈尔市恒昌中学校2022-2023学年高二上学期期中数学试题(已下线)专题08 圆锥曲线 第二讲 圆锥曲线中的定点、定直线与定值问题(分层练)
名校
解题方法
8 . 已知函数
(其中
).
(1)当
时,求函数
的图像在
处的切线方程;
(2)若
恒成立,求
的取值范围;
(3)设
,且函数
有极大值点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d232504510bfedc6ac565e304e51b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e799e937076aa5a7dcd51cdc0f40f6b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e156bd36aef172cb4e6360638aac4de6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a38db255663bf0329a1ce1f9614237d.png)
您最近一年使用:0次
名校
9 . 已知函数
,若对于任意的
,都有
成立,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e7a101f06e4ce848ef68c9dac1661a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a6c0fddb9074dfc96be03b4aa24d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e6cf80ef58d5b34da51563489bfb69f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-12-14更新
|
762次组卷
|
6卷引用:2015-2016学年天津静海县一中五校高二下期末数学理试卷
名校
解题方法
10 . 已知函数
,
.(
为自然对数的底数)
(1)设
;
①若函数
在
处的切线过点
,求
的值;
②当
时,若函数
在
上没有零点,求
的取值范围.
(2)设函数
,且
,求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d70266454df40256268b19b055a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8d28c711e4c5b2dd75047801ed2d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
①若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd09fb9482124fd35f19b86894648f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f00bba28ce932fbcc82ed562994f031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f669dcf6b9da65aab4c1afafb68b8dd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52ed14f9b002ee44c19c1c674fbad2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee863b185ed0bc1dddccd153e8f1f8e.png)
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2018-03-07更新
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14卷引用:【区级联考】天津市和平区2018-2019学年度第二学期高三年级第三次质量调查数学(文)试题
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