1 . 选修4-5:不等式选讲
(1)解不等式:
;
(2)已知
,求证:
恒成立.
(1)解不等式:
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005697081344/1579005697859584/STEM/3b23c3381d6146a691b97a3b7614e93d.png)
(2)已知
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005697081344/1579005697859584/STEM/1e89f2b0ac664c40a800c03216eb3213.png)
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005697081344/1579005697859584/STEM/0bb49dc14d4e4341a54fec2607b74c4f.png)
您最近一年使用:0次
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2 . 已知函数
,且
的最大值记为
.
(1)求不等式
的解集;
(2)是否存在正实数
,同时满足
,
?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df48718a0531aefa9912ffbb27401a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8559250e7a91f36fe7a8ec6ce6a1550f.png)
(2)是否存在正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a042859dfcd5fbcded55d3b6754f292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce380caf333a02adadb37bb3c563d65.png)
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2017-07-04更新
|
143次组卷
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2卷引用:安徽省蚌埠市第二中学2018届高三7月月考数学(文)试题
13-14高三上·安徽淮南·阶段练习
3 . 关于
的不等式
的解集为
,则实数
的取值范围是_______________ .
![](https://img.xkw.com/dksih/QBM/2013/12/27/1571436523700224/1571436529401856/STEM/fd1941f5ed544c2b965aefc8cd006c46.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2013/12/27/1571436523700224/1571436529401856/STEM/b5c976fd900d4b4e9d088a23d92ec0ae.png?resizew=145)
![](https://img.xkw.com/dksih/QBM/2013/12/27/1571436523700224/1571436529401856/STEM/2234f8d9755244bd96959638cc42bc82.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2013/12/27/1571436523700224/1571436529401856/STEM/9274a83534e84792bdbc83600980fe15.png?resizew=13)
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4 . 选修4-5、不等式选讲
已知
的最小值为
.
(1)求
值
(2)解关于
的不等式
.
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658fd7d8b05592f0d9dbd9e217635b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194ec3afaf6dadebd31dc484b2c9a28e.png)
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5 . 选修4-5:不等式选讲
已知函数
.
(1)解不等式
;
(2)若存在实数
,使得
,求实数
的取值范围.
已知函数
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572386129387520/1572386135826432/STEM/70c72ecf4bf44b609975cc5d5ec36c24.png)
(1)解不等式
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572386129387520/1572386135826432/STEM/108cc8743997486b81b6733cdb2b8ddd.png)
(2)若存在实数
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572386129387520/1572386135826432/STEM/5db9083a5f6d486389e387a23bfe92a2.png)
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572386129387520/1572386135826432/STEM/5343a8c4290848c69b81817786eccf44.png)
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572386129387520/1572386135826432/STEM/810edf4f00ee41aa8135eb697a88b22a.png)
您最近一年使用:0次
2016-12-03更新
|
10次组卷
|
5卷引用:2017届安徽寿县一中高三上学期月考二数学(文)试卷