设函数
是偶函数,且值域为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
______ .(写出一个正确答案即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be381da62d4a042476aa11dbd5824e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
更新时间:2022-07-06 21:52:00
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【推荐1】已知函数
,
,则函数
的值域为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5998bc3d6c9721bf695323668d63a9c9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐2】函数
,
的值域为________ ,函数
,
的值域为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26af862ac8e4e2fe03204b0463a7a789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92d9a3229dea06a640603772792aae79.png)
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【推荐1】奇偶性
偶函数 | 奇函数 | |
定义 | 一般地,设函数![]() ![]() ![]() | 一般地,设函数![]() ![]() ![]() |
定义域特征 | 关于 |
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【推荐2】若函数
同时满足:⑴对于定义域上的任意
,恒有
; ⑵对于定义域上的任意
,当
时,恒有
,则称函数
为“理想函数”.给出下列四个函数中: ①
,②
, ③
,④
,能被称为“理想函数”的有_____________ (填相应的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
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