若“方框”
表示运算
,则“方框”
= __________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/27/ce3fe028-ff94-4b0c-be2b-094cc74f9f02.png?resizew=51)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18cea327376928c9d552b65774682b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/27/e0199f33-665b-4519-9ee3-e24b993ccb86.png?resizew=49)
更新时间:2020-10-25 23:14:11
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【知识点】 新定义下的实数运算