1 . 已知
,则x+y的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6bc6e8021a23fed19de9803671216a.png)
您最近一年使用:0次
2 . 已知
,
.则
等于____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/578eb73ebeaa77a8bb2bd9f656feb4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b3ee0056fec6889307e0f8f3c9e1ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2231f3f1fa06093b9cff2730204e273.png)
您最近一年使用:0次
3 . 函数
的定义域为
,若(1)
在
内是单调函数,(2)存在区间
,使得
在区间
上的值域是
,则称
为闭函数.若
为闭函数,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0195f699765021e2c6ea985e487971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a5ff66832ed844c01532a5cf603a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2018-12-20更新
|
191次组卷
|
3卷引用:江苏省南通市启东中学2017-2018学年高一下学期期初数学试题
4 . 设函数
,则不等式
的解集为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545858c0990c586ca4b8d58e4a405062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c388ddc8710bf1cc107170b84d9c4bf.png)
您最近一年使用:0次
2018-12-10更新
|
248次组卷
|
3卷引用:2018江苏高联初赛试题