1 . 已知函数
.
(1)判断函数
的单调性;
(2)求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa4791292e8def22b46d5e4450a05bd1.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb4d85493f6c96fa532ba204c48a2b7.png)
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2 . 已知函数
.
(Ⅰ)当a<0时,求f(x)的单调区间;
(Ⅱ)若对任意的
及
,恒有
成立,求实数m的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572505075499008/1572505081839616/STEM/8156ccc2a444499d92630607789e44f4.png)
(Ⅰ)当a<0时,求f(x)的单调区间;
(Ⅱ)若对任意的
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572505075499008/1572505081839616/STEM/2c1ecda837104ccf8aef8abd9d2ae66d.png)
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572505075499008/1572505081839616/STEM/026eba6639244a5182823b310917b031.png)
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572505075499008/1572505081839616/STEM/5da871f21ff94a32abce66eae1de5f60.png)
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解题方法
3 . 已知函数
.
(1)函数
在
处的切线方程为
,求
的值;
(2)当
时,若曲线
上存在三条斜率为
的切线,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8747fad078817b39c5e445912495d3.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf65191643885842f4cb52d8b28e44fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ff2912fd8d93b6e692936d95b727c5.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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4 . 已知函数
,其中e是自然对数的底数.
(Ⅰ)证明:
是R上的奇函数;
(Ⅱ)若关于x的不等式
在
上恒成立,求实数m的取值范围;
(Ⅲ)已知正数a满足:存在
,使得
成立,试比较
与
的大小,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e010b7d24d4542d8023f4505b3576bf6.png)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f29cc451895062ea27126ac32799609f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a141e697b1a31a9a4e759984e899a5.png)
(Ⅲ)已知正数a满足:存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8688bddc873156c8c106459c7913e5b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99bde3d722e10c76d04487e53eb0f0bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5be08023c356afbcb751d72afdeb394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09ee16f934f9d2a6a2fec6649a8156ca.png)
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真题
5 . 已知函数
.
(Ⅰ)若
时,
,求
的最小值;
(Ⅱ)设数列
的通项
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0907fdef48938e395a4df44c336b29.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec9ff3d82ba1c5f4bf4d217371ddee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f7000d9103670cb5b65b0aa8be654f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5fffd330dd6b9241659d790bd2a7fb2.png)
(Ⅱ)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9165918e0a6b4a18659e451e5697ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b02501e3fd4e459f77bd1fb561d922.png)
您最近一年使用:0次
2016-12-02更新
|
4204次组卷
|
9卷引用:贵州省遵义市2018届高三上学期第二次联考数学(理)试题
贵州省遵义市2018届高三上学期第二次联考数学(理)试题2013年全国普通高等学校招生统一考试理科数学(全国大纲卷)广西名校2019-2020学年高三上学期12月高考模拟数学(理)试题(已下线)第35讲 函数与数列不等式问题-突破2022年新高考数学导数压轴解答题精选精练(已下线)模块三 大招24 对数平均不等式(已下线)模块三 大招10 对数平均不等式(已下线)大招30对数平均不等式(已下线)专题16 对数平均不等式及其应用【讲】(已下线)专题10 利用微分中值法证明不等式【练】
2012·贵州黔东南·一模
6 . 已知函数
的图象经过![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8110af10ad85bc6b8d5b38298d9d368.png)
其中![](https://img.xkw.com/dksih/QBM/2012/4/18/1570836999151616/1570837004812288/STEM/b38e40fe9f8f4759b7fd241d13cad912.png?resizew=12)
为自然对数的底数,
).
(Ⅰ)求实数
;
(Ⅱ)求
的单调区间;
(Ⅲ)证明:对于任意的
,都有
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ffa9c47c9fb3e392ce5a729b5a9ff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8110af10ad85bc6b8d5b38298d9d368.png)
![](https://img.xkw.com/dksih/QBM/2012/4/18/1570836999151616/1570837004812288/STEM/4d3b538def084e34a26f19993d6b5320.png?resizew=11)
![](https://img.xkw.com/dksih/QBM/2012/4/18/1570836999151616/1570837004812288/STEM/b38e40fe9f8f4759b7fd241d13cad912.png?resizew=12)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84b8240c6eeccaed068ceeb0d5616ec.png)
(Ⅰ)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅲ)证明:对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a13eaa9e948e72495ff081843cbabf2.png)
您最近一年使用:0次
10-11高三·贵州遵义·阶段练习
7 . 已知函数
.
(1)求
的极值;
(2)若
在
上恒成立,求
的取值范围;
(3)已知
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fac7d4b262bc29fc21cc0ac8130219a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a446f83b87e2e13c873b422ca2010a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ca6029de1b501bf9496e93d15f3f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236759beb513f47b45ba9119b241f879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60fc9c28c715747824f17aec77aacfe2.png)
您最近一年使用:0次