名校
1 . 若方程
有实数根
,则称
为函数
的一个不动点,已知函数
.
(1)若
,求证:
有唯一不动点;
(2)若
有两个不动点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e481fa6b52a35958267a95528a39b5c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22362247969ade54a950a49157ff67f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2021-05-30更新
|
520次组卷
|
3卷引用:2020届湖南省衡阳市高三下学期第一次模拟理科数学试题
2 . 已知函数
,
,
为自然对数的底数.
(1)求函数
的单调区间;
(2)记
,求证:对任意
,
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155171109f92f46b4eb170fc4d340483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880247b3448ccfddc5c89062b92f790f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2beb22b735da7cb8054dd722450632f5.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7863b54185da5a3f1a765e1aa0577e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ad8c947e7b6d61c611bb1b9df7eecf.png)
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2020-10-09更新
|
352次组卷
|
2卷引用:湖南省湘阴县知源学校2020-2021学年一轮复习联考(一)数学试题
3 . 如图,在平面直角坐标系
中,已知椭圆
:
,其右焦点
到直线
的距离为1,离心率为
,
,
分别为椭圆
的上、下顶点,过点
且不与
轴重合的直线
与椭圆
交于
,
两点,与
轴交于点
,直线
与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/b35de2af-a1b1-454c-a19d-f490f09ee957.png?resizew=204)
(1)求椭圆
的标准方程;
(2)当
时,求直线
的方程;
(3)若
,
,
三点不共线,直线
的斜率存在,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.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/0fa5d6092f598c7da4796f965e40525a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.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/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/b35de2af-a1b1-454c-a19d-f490f09ee957.png?resizew=204)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af68726188a388c4bae668bc4463087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5960d174a7b0f1d60eee8f91cefcee.png)
您最近一年使用:0次
名校
解题方法
4 . 已知函数
.
(1)讨论函数
的单调性;
(2)若
,
为函数
的两个极值点,且
,
为函数
的两个零点,
.求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da20425f98c046efa3d2c50f74f703ba.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860a711d8113cb24458cb7103c210eaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e172478e263fa42cd42dcd3641638c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd87c7f4521039f214ca12bc1506916.png)
您最近一年使用:0次
2020-11-04更新
|
933次组卷
|
5卷引用:广东省深圳实验学校高中部2021届高三上学期11月月考数学试题
名校
5 . 已知函数
.
(1)讨论
的单调性.
(2)若对任意的
,总存在
,
,使得
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5e981884a8b60f80e5ae420b9c2f9c.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f039953f09677969db031e357ec8a208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1540b6b10f07a867618a1eec02e2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76b904eb12a0bbfff54174d51afe834.png)
您最近一年使用:0次
2021-05-01更新
|
587次组卷
|
7卷引用:湖南省2021届高三下学期4月联考数学试题
湖南省2021届高三下学期4月联考数学试题广东省广州市协和中学2020-2021学年高二上学期期中数学试题河北省2021届高三下学期四月考试数学试题广东省揭阳第一中学2020-2021学年高二下学期期中数学试题河南省新乡市2020-2021学年高二下学期期中考试数学(理)试卷(已下线)专题3.12 恒成立、存在性问题-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)第四章 导数专练10—含有任意、存在性问题-2022届高三数学一轮复习
名校
解题方法
6 . 如图,椭圆有这样的光学性质:从椭圆的一个焦点出发的光线,经椭圆反射后,反射光线经过椭圆的另一个焦点.已知椭圆
:
的左、右焦点分别为
,
,左、右顶点分别为
,
,一光线从点
射出经椭圆
上
点反射,法线(与椭圆
在
处的切线垂直的直线)与
轴交于点
,已知
,
.
![](https://img.xkw.com/dksih/QBM/2021/4/28/2709617615650816/2711746662629376/STEM/9c76383a-0a7e-4b6f-9c55-b4df8147515f.png?resizew=318)
(1)求椭圆
的方程.
(2)过
的直线与椭圆
交于
,
两点(均不与
,
重合),直线
与直线
交于
点,证明:
,
,
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9bece414af7ecb2d796dc8a6f549e1.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e824abc723d59ba472b92aded26bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce2b734a628a3f60285bff22ebac12f.png)
![](https://img.xkw.com/dksih/QBM/2021/4/28/2709617615650816/2711746662629376/STEM/9c76383a-0a7e-4b6f-9c55-b4df8147515f.png?resizew=318)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
您最近一年使用:0次
2021-05-01更新
|
622次组卷
|
4卷引用:湖南省2021届高三下学期4月联考数学试题
7 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e526b53a61feb0e463dd806dba95c4a5.png)
(1)求函数
在
处的切线方程;
(2)求证:
;
(3)若
时,
恒成立,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e526b53a61feb0e463dd806dba95c4a5.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6000b174147cec2de26041837aec1b3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c60d22700bbdc4ef5f9800f7dbaefa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6af6bc3c674df2183d47e508d1bdbb.png)
您最近一年使用:0次
2020-08-07更新
|
426次组卷
|
3卷引用:湖南省衡阳市2020届高三高考数学(文科)(三模)联考试题
8 . 给出定义:设
是函数
的导函数,
是函数
的导函数,若方程
有实数解
,则称点
为函数
拐点.已知
.
(1)求证:函数
的拐点
在直线
上;
(2)
时,讨论
的极值点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a53de2e60c85b2044ed87efc5b76b8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10acd6d864583617dd3e71240bf0c857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a53de2e60c85b2044ed87efc5b76b8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1fa6ca9eb7cea9131dad36db6a0ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b6db145f3e561e3d16b8e58b62550a.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06dfc9e95cade14ae9b7fc89519a2dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1447dbe580ac5c825776995118e75acf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91029148ad78d9cd3e7c26704b3c77b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
9 . 数列
满足
,
,
,
.
(1)求
,
及
(用
表示);
(2)设
,求证:
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbfe9cbf54b82384301dbbf69289c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502499c83471a18306bc0e021a5017a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21659513ebcf7a1be6f3f7d8f733c733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245634836d83f65fc1cc073a8d758aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b007ca14c228e163ee280a921c4df0.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/119070b66392cbc0e9c70b7785a74b8f.png)
您最近一年使用:0次
名校
10 . 对于定义在D上的函数f(x),如果存在实数x0,使得f(x0)=x0,那么称x0是函数f(x)的一个不动点.已知f(x)=ax2+1.
(1)当a=-2时,求f(x)的不动点;
(2)若函数f(x)有两个不动点x1,x2,且x1<2<x2.
①求实数a的取值范围;
②设g(x)=loga[f(x)-x],求证:g(x)在(a,+∞)上至少有两个不动点.
(1)当a=-2时,求f(x)的不动点;
(2)若函数f(x)有两个不动点x1,x2,且x1<2<x2.
①求实数a的取值范围;
②设g(x)=loga[f(x)-x],求证:g(x)在(a,+∞)上至少有两个不动点.
您最近一年使用:0次
2021-03-12更新
|
1158次组卷
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