1 . 选修4-5:不等式选讲
已知函数
同时满足
和
.
(1)求实数
的值;
(2)记函数
的最小值为
,若
,求
的最小值.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a47f9e7b22980842de50219f2f18c97e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2077c709eae596b20e4c62753c09f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce73e98e22de1deb9b050597e84ecba0.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eec78ead0f4c78fd476a4c8c4019849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32043a653eba02c79ae6395b3bcb34f.png)
您最近一年使用:0次
2016-12-04更新
|
154次组卷
|
2卷引用:2016届福建省泉州市高三5月质检理科数学试卷
2 . 已知函数
.
(1)解不等式
;
(2)若不等式
对任意
恒成立,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572581181743104/1572581187444736/STEM/ad9e6ac9290c4cda84bc6475a356618d.png)
(1)解不等式
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572581181743104/1572581187444736/STEM/ac639dfb86244a7881f367659626dfd7.png)
(2)若不等式
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572581181743104/1572581187444736/STEM/6955e031978d410ea1afae3bb91f6d7e.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572581181743104/1572581187444736/STEM/2b2a43a32b924695af0e51bfc1b557d3.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572581181743104/1572581187444736/STEM/aa4d9eb2f12f4c9fab111730fb6a4e92.png)
您最近一年使用:0次
10-11高三下·福建莆田·阶段练习
3 . 若函数
的最小值为2,求自变量
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ecc25d3704ef7be77841f9b0994306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
4 . 选修4-5:不等式选讲
设函数
,
.
(Ⅰ)解不等式
;
(Ⅱ)设函数
,且
在
上恒成立,求实数
的取值.
设函数
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542513664/STEM/de05bb044dcb4ba39553522b0e4993f2.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542513664/STEM/52ba4b702ec24cd7a47bdc32e849ca31.png)
(Ⅰ)解不等式
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542513664/STEM/929d421c13eb4e8f92c45f610bd613d4.png)
(Ⅱ)设函数
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542513664/STEM/8e57090b1912413fb0aacd0f413d68bf.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542513664/STEM/13285b8af90b4ab2bcf4eb837e0f9c55.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542513664/STEM/172b109d5afa43dab17be18ef5c8c2f7.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542513664/STEM/2efca7b1faf342c6a17fb5d867c2de44.png)
您最近一年使用:0次
5 . 已知函数
.
(1)当
时,求函数
的定义域;
(2)若关于
的不等式
的解集是
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f74b1a7d32707c61a3c3451ab7458153.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f34365e5040ce6944115c8da61bf110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daca8f97e33229f87a339d2d0584d2c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-02更新
|
1112次组卷
|
2卷引用:福建省闽侯第六中学2018届高三上学期第一次月考数学(文)试题