已知点
关于
轴的对称点
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e280d0441a31fdbef3ce192d8d8f8dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6762769f9db1a38cba51972ef0464e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cde6da5e4a71a3df6cd950ff1a90920.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-05-05 23:45:45
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【推荐2】若方程组
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A.2 | B.-2 | C.3 | D.-3 |
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【推荐1】如图,在平面直角坐标系中,OABC是正方形,点A的坐标是(4,0),点P为边AB上一点,∠CPB=60°,沿CP折叠正方形,折叠后,点B落在平面内点B’处,则B’点的坐标为
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A.![]() | B.![]() | C.![]() | D.![]() |
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