设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
,若当
时
有意义,则a的取值范围是_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9084d92833f5a94984097afa544db5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35de1f3e8ffdedd30c910ca60ce0b2b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
11-12高一下·山东聊城·阶段练习 查看更多[3]
(已下线)2011-2012学年山东省聊城市水城中学高一3月考试数学试卷(已下线)1999年全国高中数学联赛广西赛区初赛试题(已下线)【新东方】浙江省2019-2020学年高一上学期数学试题【JAQ】
更新时间:2016-12-01 18:14:58
|
相似题推荐
填空题-单空题
|
适中
(0.65)
【推荐1】定义:区间
的长度
,已知函数
的定义域为
,值域为
,则区间
的长度的最大值与最小值的差为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3d81b9a841ea435bc649f21473fd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c54705d32dc6820f1a90eec2225dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dff59eabba66c62381689de2ba24c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
解题方法
【推荐2】定义:区间
长度为
.已知函数
定义域为
,值域为
,则区间
长度的最小值为_______ .
![](https://img.xkw.com/dksih/QBM/2013/9/12/1571353728819200/1571353734635520/STEM/862936b369df472d83d0c8a7b10c05d7.png?resizew=107)
![](https://img.xkw.com/dksih/QBM/2013/9/12/1571353728819200/1571353734635520/STEM/5fcdbf8bd5364eaa82c1f30d5c41c439.png?resizew=47)
![](https://img.xkw.com/dksih/QBM/2013/9/12/1571353728819200/1571353734635520/STEM/7e43f7083e9f4e7fb96e9352e024926d.png?resizew=84)
![](https://img.xkw.com/dksih/QBM/2013/9/12/1571353728819200/1571353734635520/STEM/bc13349a79524ea69453519fac5abd0d.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2013/9/12/1571353728819200/1571353734635520/STEM/20aa034724e9454aab901c7bf20d6998.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2013/9/12/1571353728819200/1571353734635520/STEM/bc13349a79524ea69453519fac5abd0d.png?resizew=36)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐1】已知函数
,若
时,不等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d724b1d29d1fa871418e82ef7e84dd.png)
恒成立,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d460049d1c4ff6a2c3c3b1b92aca7369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d4f037d480317d9159e01106e76470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d724b1d29d1fa871418e82ef7e84dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46b5f018fba8851a1fff955f1ba2174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐2】若不等式
对任意
恒成立,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e90cdd75f5e1203c42f794557c9aa71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4600e5b68781cad26ae3ad645040d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次