若a,b互为相反数,c,d互为倒数,数轴上表示数m的点到
的距离是3,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252986acb628bfded163f3e7b0a66ff1.png)
更新时间:2023-10-19 17:02:06
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解答题-作图题
|
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【推荐1】如图,一个点从数轴上的原点开始,先向左移动
到达A点,然后向右移动
到达B点,再向左移动
到达C点.用1个单位长度表示
,
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/b3592d2e-ee55-4d31-a1cb-5faaed7c222a.png?resizew=577)
(1)请你在数轴上表示出
三点的位置;
(2)求
三点到原点的距离之和;
(3)如果数轴上有两点
,那么可以把点M到点N的距离记为
.若点
分别表示的数为
,则
.请根据以上方法解决下面问题:已知点
不动,点A以每秒
的速度向右移动.设移动时间为t秒.问:t为何值时,
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a9eed64d225267a58cd001db67e2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b1fe1b971b780e443a9b13621611c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/b3592d2e-ee55-4d31-a1cb-5faaed7c222a.png?resizew=577)
(1)请你在数轴上表示出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
(3)如果数轴上有两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c406777da0e4f1de8535f04edffd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/830f823c939d89a4c9549743dee542b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d143783222f92b0237e5daf35323520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b93dbe5272a5167ff4e2918bec864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00698dbee4319fc8d87ede6486f4b177.png)
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解答题-问答题
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【推荐2】已知数轴上,点A和点B分别位于原点O两侧,
,点A对应的数为a,点B对应的数为b.
若
,则a的值为______;
若
,求a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4b1fdfa6c28c7b4113ba306547aa4b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/16/31c70925-6490-4b69-ae9e-c5230cdb93d9.png?resizew=178)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
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解答题-问答题
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【推荐1】(1)将数-2,+1,0,
,
在数轴上表示出来.
(2)将(1)中各数用“<”连接起来.
(3)将(1)中各数的相反数用“>”连接起来.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc875a6ccf67b7c2f0bf4baadbdbb918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068be63cf798cb7f332dbfae19e0c396.png)
(2)将(1)中各数用“<”连接起来.
(3)将(1)中各数的相反数用“>”连接起来.
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解答题-问答题
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【推荐2】已知
,
互为相反数,
,
互为倒数,且
的绝对值等于3,试求:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d1496a427a4ff1d386151d83b4d727.png)
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解答题-问答题
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【推荐1】已知|a|=6,|b|=2,且ab<0,求a-b的值.
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解答题-问答题
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【推荐2】已知:|a|=8,|b|=5.
(1)若a>b,求a﹣b的值;
(2)若ab<0,求a+b的值.
(1)若a>b,求a﹣b的值;
(2)若ab<0,求a+b的值.
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