下列关于函数
的说法正确的是______ .
①
是
的函数;②
是
的函数;③对于不同的
,
也不同;④
表示当
时,
的函数值是一个常数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f484115a9df1b6060d6b14df85c6f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
更新时间:2023-12-27 10:57:44
|
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填空题-单空题
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【推荐1】如图,设
,
,表示A到B的函数的是__________
填序号
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8268639ffc96ba6e136931e28aa67e4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f83dcb924f54911a1e2ab309640adca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/a28b3ed1-c4e0-4959-9c03-6a80cee5811d.png?resizew=262)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
解题方法
【推荐2】设集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0b13627ab7e862b956bfa9bcbf98f1.png)
__________ (用区间表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc72d1cbc4842b9d22133fb1f51f147e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0b13627ab7e862b956bfa9bcbf98f1.png)
您最近一年使用:0次