对应
是集合
到集合
的映射,若集合
,则集合
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b9e6aea68c71afde36df8f3250403b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfe1a699fa50b740ba0db5781d5e9bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
更新时间:2018-09-30 16:17:50
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【推荐1】已知集合
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【推荐2】给定映射f:(x,y)→(x+2y,2x-y),则象(3,1)对应的原象为______ .
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