名校
1 . 已知函数
,
.
(1)讨论函数
的单调性;
(2)若存在与函数
,
的图象都相切的直线,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed02a0eb91ac3b3f4e11796fc97a1a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e13cc3872c9b7906449992f9075861.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c204be088a8fc6c096eedd5b1e7dc7.png)
(2)若存在与函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-03-26更新
|
722次组卷
|
3卷引用:【市级联考】湖北省八市(黄石市.仙桃市.天门市.潜江市.随州市.鄂州市.咸宁市.黄冈市)2019届高三3月联合考试理科数学试题
2 . 已知椭圆
的左右焦点分别为
,其焦距为
,点
在椭圆
上,
,直线
的斜率为
(
为半焦距)·
(1)求椭圆
的方程;
(2)设圆
的切线
交椭圆
于
两点(
为坐标原点),求证:
;
(3)在(2)的条件下,求
的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5379ca02a94af1e74e5e00e38ba6e327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a649229b6afa314d5cb7d9a66115734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f4faed99e8f7100584d50eedea8c1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ecc3aaae2aa289591a3b632f1e0645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b33328faae2d2d4921900e97424de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b2fe2eaadae4df6247a131a1cddb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(3)在(2)的条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24c95fe581befd56c3bcc70e88b726.png)
您最近一年使用:0次
2019-03-26更新
|
453次组卷
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3卷引用:【市级联考】湖北省八市(黄石市.仙桃市.天门市.潜江市.随州市.鄂州市.咸宁市.黄冈市)2019届高三3月联合考试理科数学试题
3 . 已知函数
,
.
(1)求函数
的极值;
(2)①讨论函数
的单调性;
②求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea90b54108cd2768f10d5560827358b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1ca2faff4ad3e5711f60807441196c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)①讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1264f56f22fcf7aa5cb595bbd0ca5091.png)
您最近一年使用:0次
名校
4 . 在直角坐标系
中,椭圆
的方程为
,左右焦点分别为
,
,设
为椭圆
上位于
轴上方的一点,且
轴,
、
为椭圆
上不同于
的两点,且
,设直线
与
轴交于点
,则
的取值范围为____ .
![](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/6cae00bdc6f8b564b6b15b32572c848b.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47fb32b931ef1125d7a241d1c829e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/7a896e2a27b483e3a8384b6b46a1d54a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489d120a817a6ecd28874209fefaf3b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
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2019-03-11更新
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832次组卷
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3卷引用:【市级联考】湖北省恩施州2019届高三2月教学质量检测数学(文)试题
【市级联考】湖北省恩施州2019届高三2月教学质量检测数学(文)试题重庆市杨家坪中学2019-2020学年高二上学期第二次月考数学试题(已下线)专题31 圆锥曲线中的定点、定值、探索性问题-冲刺2020高考跳出题海之高三数学模拟试题精中选萃
5 . 已知函数
.
(1)当
时,探究
零点的个数;
(2)①证明:
;
②当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e410c152e5e77ec267845e1a3e1fd0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
(2)①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b7d61b2d4251235dffb16ab8564e30.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a4dd18b509b85d00c865f2d672e2fe.png)
您最近一年使用:0次
6 . 设函数
,若
,
成立,则
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7756e7531ffd96772619f3de538acf92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a9967df00fb7026b877831bc561526c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
7 . 已知函数
.
1
若
,求函数
的单调区间;
2
若对任意的
,
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/600535191aef21a63c307531fbb8a1ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3296fcbc9d1f98427ed234ad2bffb83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28652a094ab40a413d0fe9332eab951e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e2781d5433eed9ec68318fa63d6db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2188e898a6af08a1e4f4001001194bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2019-03-04更新
|
688次组卷
|
2卷引用:【市级联考】湖北省荆门市2019届高三元月调研考试数学(理)试题
8 . 若函数
在
上单调递增,则实数
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079a6e33ed24566c06cc63f3dad29588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ab6b7ae1faeaca91a23b2140ad92c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
9 . 已知函数
.
(1)若函数
在区间
上单调递减,求实数
的取值范围;
(2)设
的两个极值点为
,证明:当
时,
.(附注:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/874282e3a662d687987293af82224a57.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1215d01764a3b041d2f4497806da95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fa63f0c092e1b9ce8baad1eb64ad487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27a534a19e1a6ca03b1e29075935a47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d2333ca293f377bd75c1548be32477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36c17a1913975822fd4abbe60945b0b.png)
您最近一年使用:0次
2019-03-03更新
|
772次组卷
|
2卷引用:【市级联考】湖北省武汉市2019届高中毕业生二月调研测试数学(理)试题
名校
10 . 已知椭圆
的长轴长为4,离心率为
.
(1)求椭圆
的标准方程;
(2)过
作动直线
交椭圆
于
两点,
为平面上一点,直线
的斜率分别为
,且满足
,问
点是否在某定直线上运动,若存在,求出该直线方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1193fec7c34d581b448525a32e7256e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78c38805c09dcfbcc42103308975a74.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a820d31901f37f7d8c99ae3fa819030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ea3937ce03589a38914d715f8c78aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53caca1f2551527abc7643832820402f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e29cb2aa5e83497b85cd10f16d91a468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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2019-03-03更新
|
830次组卷
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2卷引用:【市级联考】湖北省武汉市2019届高中毕业生二月调研测试数学(理)试题