![](https://img.xkw.com/dksih/QBM/2011/4/18/1570121951567872/1570121956786176/STEM/6fc985478e7d490ab7da8e97cb66e8a8.png?resizew=127)
![](https://img.xkw.com/dksih/QBM/2011/4/18/1570121951567872/1570121956786176/STEM/48c170673c7b4129949d2f1ddbe1fa3d.png?resizew=63)
![](https://img.xkw.com/dksih/QBM/2011/4/18/1570121951567872/1570121956786176/STEM/4ec4605a21ac43c6ae60cc2842dd0eb4.png?resizew=60)
![](https://img.xkw.com/dksih/QBM/2011/4/18/1570121951567872/1570121956786176/STEM/a7bd767dbd4d4be88775037c2a974e2b.png?resizew=13)
10-11高二下·海南·期末 查看更多[1]
(已下线)2010-2011年海南省嘉积中学高二下学期质量检测数学理卷(一)
更新时间:2016-11-30 18:04:12
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【知识点】 利用导数研究不等式恒成立问题
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】已知
,
,其中
是自然对数的底数,
.
(1)当
时,证明:
;
(2)是否存在实数
,使
的最小值为3,如果存在,求出
的值;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0d8f7ed1e991fdb8cbe31ec735564a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1dc1b0925de47e0dd05812b8178300c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf61eff0769c70587ae0a1650681b085.png)
(2)是否存在实数
![](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/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】已知:函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38572ad4ef879663d599510d64c4020f.png)
.
(1)若
,求函数
的单调区间;
(2)若函数
,且
在
时恒成立,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38572ad4ef879663d599510d64c4020f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3442ce843d02b54055cfad056b091d7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c881d766212b162eb7f7e828ebdbf340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0879734ee766cb630cfeb3f25fea7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737c165baced95d7095d9f918a9cc110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次