如图,圆的周长为4个单位长度.在该圆的4等分点处分别标上数字0,1,2,3,先让圆周上表示数字0的点与数轴上表示数
的点重合,再将圆沿着数轴向左滚动.则数轴上表示数
的点与圆周上重合的数字是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/e6640bc0-e1fa-484f-8fe6-8219da52d4af.png?resizew=253)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ae8ff881c459a3abd9de3ca8c9e95bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/e6640bc0-e1fa-484f-8fe6-8219da52d4af.png?resizew=253)
A.0 | B.1 | C.2 | D.3 |
更新时间:2023-02-08 12:51:31
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【推荐1】如图,在数轴上2、
的对应点是
、
,
是线段
的中点,则点
所表示的数是( )
![](https://img.xkw.com/dksih/QBM/2020/4/8/2437244018548736/2437881866756096/STEM/77a543e5-24eb-4667-a198-fe1fe38bbf6a.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,点A,B,C是直线
上的三个定点,AB=3BC,AB-BC=6m,其中m为大于0的常数,若点D是直线
上的一动点,M、N分别是AD、CD的中点,则MN与BC的数量关系是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/0d77ba45-fc00-4750-83aa-8a1c5411bf63.png?resizew=200)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/0d77ba45-fc00-4750-83aa-8a1c5411bf63.png?resizew=200)
A.MN=2BC | B.MN=BC | C.MN=3BC | D.2MN=3BC |
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【推荐1】问题:有一列数,按一定规律排成一列:1,
,9,
,81,
……其中某三个相邻数的和是
,求这三个数中最小的数.
为解决问题,甲、乙两人给出各自为解题所设列的方程:
甲:设这三个数中绝对值最小的一个数是x,则另两个数依次是
、
,根据题意得
.
乙:某三个相邻数的和是
,则设这三个数中绝对值最小的一个数是
,则另两个数依次是
,
,根据题意得
.
下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cd48b9f4a2d6fdc3fa433d920b48a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86617aecf78f8ed90cc0822a0d2d91c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45224db8a74a39036fba0ee17cfa51d2.png)
为解决问题,甲、乙两人给出各自为解题所设列的方程:
甲:设这三个数中绝对值最小的一个数是x,则另两个数依次是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f07fe2cd5e5069c1ea06d8186e3207a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68f680c3b5a3a41fed6da53d6256ac2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5932fefe078468f83c199630735469f.png)
乙:某三个相邻数的和是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45224db8a74a39036fba0ee17cfa51d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/121ee8a5a4f66a60ad6654196baf0d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a2bfe385f482713a619599aa097fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13da955ff1a74b4a2ab433b54b5ba59a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d37a7f1be6c05659ee7efc76c6579dc.png)
下列说法正确的是( )
A.甲、乙两人所列方程都正确 | B.甲、乙两人所列方程都不正确 |
C.甲列方程正确、乙列方程不正确 | D.甲列方程不正确、乙列方程正确 |
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【推荐2】现有一列数:
,
,
,
,…,
,
(为正整数),规定
,
,
,…,
,
的值为( )
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A.![]() | B.![]() | C.![]() | D.![]() |
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