计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b84d2513b99dbe8eb3916cb414f4ba.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b84d2513b99dbe8eb3916cb414f4ba.png)
2023·山西·模拟预测 查看更多[2]
更新时间:2023-03-29 15:26:17
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【推荐2】计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e216bc0c5abbc5eec7102c306e6fdabb.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbde0b2f4d275895a143108c90e9a44.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5263d8fae8264b648cfc24936fb6ae2.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e216bc0c5abbc5eec7102c306e6fdabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbde0b2f4d275895a143108c90e9a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5263d8fae8264b648cfc24936fb6ae2.png)
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【推荐1】对于数轴上的点A,给出如下定义:点A在数轴上移动,沿负方向移动r个单位长度(r是正数)后所在位置点表示的数是x,沿正方向移动r个单位长度(r是正数)后所在位置点表示的数是y,x与y这两个数叫做“点A的r对称数”,记作
,其中
.例如:原点O表示0,原点O的1对称数是
,若
,则点A表示的数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0b337670cf636d11866029310683ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a5abe56c019ac914e1fcde1865a747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057eb3c409ecf1ddf06b61a181ac0f04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f54b6565b77a0f203bee19a201e3147.png)
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