名校
解题方法
1 . 对于定义在
上的函数
,若存在距离为
的两条直线
和
,使得对任意
都有
恒成立,则称函数
有一个宽度为
的通道,给出下列函数:①
;②
;③
;④
.其中在区间
上通道宽度可以为1的函数的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a35b5d5cdc099c96660349ca2f5c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e152ca40b53213d6bda22b6f03cd93a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e392c8e087639f8b73c472182ca6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03d298874d6f3f970df11a2969e8a6b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e676d0a3c6f475c73af2536c9f7813c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49215b962278e79ec2a53243b54abc86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5262f0cd992ecf30cfec2436e11e82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3354c34130987e43db2b195337fd8e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca2d4a3b2f13388f3c99074d24ebfc98.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2017-04-27更新
|
239次组卷
|
2卷引用:2016-2017学年河南省洛阳市高二下学期期中考试数学(文)试卷
2 . 已知函数
有两个零点
,
.
(1)求实数
的取值范围;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3488772903d1465e394c48eddafef250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
您最近一年使用:0次
名校
解题方法
3 . 若函数
,则函数
在
上( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe7fb3298097ca236c6974cd6be2ed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
A.存在极小值,且极小值为![]() | B.存在极小值,且极小值大于![]() |
C.存在极大值,且极大值为![]() | D.存在极大值,且极大值小于![]() |
您最近一年使用:0次
名校
4 . 不等式ex≥kx对任意实数x恒成立,则实数k的最大值为_______
您最近一年使用:0次
2017-04-22更新
|
661次组卷
|
5卷引用:河南省周口市2016-2017学年高二下学期期末考试文数试题
名校
5 . 已知函数
且
在
处的切线的斜率为
.
(1)求
的值,并讨论
在
上的单调性;
(2)设
若对任意
,总存在
使得
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a5d78cc2b4224fd4cef1583c19add4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f56a20bc5fce6b02217627b42249854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04333b4c991ed653396780af0d5e145.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ca89042e4a79e67b090fcf86d5f834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3613613afc787af2aaa24dbb83ed9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc0c1d91dd8284c08f8dfd1fe0c4ed9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5179771ac52f8254d182154b9cfb2c55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2017-04-22更新
|
234次组卷
|
2卷引用:2016-2017学年河南省南阳市高二下学期期中质量评估数学(理)试卷
名校
6 . 已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2f60f320c790f0c639f5d3fa347350.png)
(1)若函数
在
上为单调函数,求实数
的取值范围;
(2)若当
时,对任意
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e43f9bd818d1a67596d61dd8b2830d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2f60f320c790f0c639f5d3fa347350.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e1c9c97de9198d47306216e9961b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7ee78819519674c96cb06f6965c9e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-04-22更新
|
409次组卷
|
3卷引用:2016-2017学年河南省南阳市高二下学期期中质量评估数学(理)试卷
解题方法
7 . 已知函数
在点
处的切线方程为
.
(1)求
的值;
(2)设
(
为自然对数的底数),求函数
在区间
上的最大值;
(3)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc02051287946450d0bffda8029a12f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c6d3c99b7004603ba9ea9c341b8b3f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb17c88e3c28a93f2ab03d349f3b24e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6179ae6bab235331b4ef2a917f165ef.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270e29294daf40d5b16a5dee297a2cdb.png)
您最近一年使用:0次
12-13高二·浙江宁波·期中
名校
8 . 已知
,其中
,如果存在实数
,使
,则
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb3a0d1447fff7121cb5f2a01f82033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7de3de3464629706233b05bdb30e5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04f52ac5472d2e3199655bcea278b82.png)
A.必为正数 | B.必为负数 | C.必为非负数 | D.必为非正数 |
您最近一年使用:0次
2017-04-15更新
|
825次组卷
|
4卷引用:2016-2017学年河南省郑州市第一中学高二下学期期中考试数学(理科)试卷
2016-2017学年河南省郑州市第一中学高二下学期期中考试数学(理科)试卷河南省郑州市2019-2020学年高二下学期阶段性学业检测题5月数学(理)试题(已下线)2012-2013学年浙江宁波效实中学高二(3-9班)下期中理数学卷(已下线)2014届浙江省慈溪中学高三第一学期10月月考理科数学试卷
名校
解题方法
9 . 已知函数
,
(
为常数).
(1)若函数
与函数
在
处有相同的切线,求实数
的值;
(2)若
,且
,求证:
;
(3)若对任意
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3b6c56aee4bb8a8131fd960415c745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0088f91cbfd9e441e586d6805f0a3828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce2594833690eedb3328fe747feb3a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2017-04-08更新
|
1004次组卷
|
4卷引用:2016-2017学年河南省南阳市第一中学高二下学期第一次月考(3月)数学(理)试卷
名校
10 . 已知函数
,
.
(1)当
时,求函数
切线斜率中的最大值;
(2)若关于
的方程
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245864b24dad2b49e87650db9336db58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb101c5df08aa35ae24a6416840b199b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2017-04-05更新
|
690次组卷
|
2卷引用:河南省鹤壁市淇滨高级中学2016-2017学年高二下学期第二次月考数学(理)试题