名校
解题方法
1 . 已知函数
,
,其中
,
,记
为函数
的最小值.
(1)求
的值;
(2)当
时,若函数
在
上单调递增,求
的取值范围;
(3)求
的取值范围,使得存在满足条件的
,满足
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2bb2c8b868ef5225c63a4c47c081e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168163183a3d4663be45755f44676191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90e8d5d7fed033f48270b1ff825fcd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6d8a4cf957865fad1cb648fcd2cbaa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c9dcfd9f4c5298035870cb88a34169.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb49dbba01c4ff5f686ffc8828351b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d650fece8e8e4fc5489253372c4c76f4.png)
您最近一年使用:0次
2019-08-17更新
|
394次组卷
|
2卷引用:上海市格致中学2018-2019学年高三下学期三模数学试题
2014高三·全国·专题练习
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2 . 已知函数f(x)=2x-
,x∈(0,1].
(1)当a=-1时,求函数y=f(x)的值域;
(2)若函数y=f(x)在x∈(0,1]上是减函数,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb59638769faa7d399f622c03ee3674f.png)
(1)当a=-1时,求函数y=f(x)的值域;
(2)若函数y=f(x)在x∈(0,1]上是减函数,求实数a的取值范围.
您最近一年使用:0次