设函数
.
(Ⅰ)当
时,求函数
的单调区间;
(Ⅱ)已知
,若函数
的图象总在直线
的下方,求
的取值范围;
(Ⅲ)记
为函数
的导函数.若
,
试问:在区间
上是否存在
(![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/933ea3da07374472861d8661293298ee.png)
)个正数
…
,使得
成立?请证明你的结论.
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/449e7e227b8940c8949af2021247da12.png)
(Ⅰ)当
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/aa090519b39347dd993a2409de7f2ff3.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/e29b2a8bf45c49578708ec3587b977fd.png)
(Ⅱ)已知
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/7f7b95d60e0344cabc4f6ed7b8b3692e.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/e29b2a8bf45c49578708ec3587b977fd.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/f94562c56ef3415789fba1ed91013893.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/11a1f1f2569d4115b098a271b82160aa.png)
(Ⅲ)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9747a6549da84473cae74bae57ec7d54.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/bd1c5be27c6344afaa5fa982bbd948cc.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/48a3621cf9bf4aa9a42d2991d2c708f6.png)
试问:在区间
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/beb1598eb714464eb55a0758fb87ae5e.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/933ea3da07374472861d8661293298ee.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/933ea3da07374472861d8661293298ee.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/eb98267792bd45e48ec8b809245770be.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/5138b2e96d764c59b8fbeb838f990614.png)
![](https://img.xkw.com/dksih/QBM/2012/6/29/1570906118488064/1570906124206080/STEM/0a4ca5f8965c4b8888e8541b189740ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042a2bf8d4b426c66bec132ac43cdf2f.png)
11-12高二下·福建·期中 查看更多[3]
(已下线)2011—2012学年福建师大附中高二下学期期中理科数学试卷(已下线)2011—2012学年福建省福建师大附中高二下学期期中文科数学试卷(已下线)2013届福建省福州外国语学校高三上学期期中考试文科数学试卷
更新时间:2016-12-01 20:38:58
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【推荐1】已知函数
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解答题-问答题
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较难
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