(1)若
,n的相反数是3,求m,n的值;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c36bf82a9e7a78503a77f40b3a65bb4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77fe4a80bf665b4aef7b945b81de8dca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6780defe19d525672f1118f60bd5610d.png)
更新时间:2022-11-02 22:23:52
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解答题-问答题
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适中
(0.65)
【推荐1】已知
,
互为相反数,
,
互为倒数,
的绝对值是3.
(1)
,
,
;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f56c7629163c5fe76b2c5990d7ac1f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdb0c49b731c6626957c9d40d8cad92.png)
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解答题-作图题
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适中
(0.65)
【推荐2】在数轴上画出下列各数的点:
,
,
,
,
,并用“>”连接.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2384167ae61cf3183559acb3006898a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7656f72db949a809ee8c3ae082d5f2ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e089c43cf0bfd06bd84d19fb10f5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4f47d27d32b7f205cd916f49623f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491ee5151700d0139323fd3c98518a66.png)
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解答题-问答题
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适中
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【推荐1】阅读理解:
表示5与
之差的绝对值,实际上也可理解为5与
两数在数轴上所对的两点之间的距离.
例1. 解方程
,因为在数轴上到原点的距离为2的点对应的数为
,所以方程
的解为
;
例2. 解不等式
,在数轴上找出
的解(如图),因为在数轴上到1对应的点的距离等于2的点对应的数为
或3,所以方程
的解为
或
,因此不等式
的解集为
或
.
(1)
的解为____________;
(2)找出所有符合条件的整数
,使得
,这样的整数是____________;
(3)不等式
的解集为____________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7ba690de4bdbdceb968265181a208f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
例1. 解方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e23117608becdb000a9812d7fe9821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b8bee40319fe80e512d221cfe252a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e23117608becdb000a9812d7fe9821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e88a7f9f2d8040d8451f06292200966.png)
例2. 解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3f7c6d752d770babee942434e1e5e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015bb51577c2c3c63d40e5b3f0ed5b93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015bb51577c2c3c63d40e5b3f0ed5b93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1c84057882768f20a01365c81b6760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3f7c6d752d770babee942434e1e5e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da6d82d173ad18cc040e94c925b5ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752455799e49f846e2601304fec5d3b8.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72bd2967c563c4627572be3b9482cfe1.png)
(2)找出所有符合条件的整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e7f5f0b2e6fb447b5050a3c3fda074.png)
(3)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052895c4466ee13b79b210720fb4141d.png)
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【推荐1】求值
(1)已知
,求代数式
的值.
(2)规定符号*的意义是
,求
的值.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b77bd48665f2773ace821822bbaa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d88a1259ac7931a999817a4dc8cef9.png)
(2)规定符号*的意义是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3617c7988a4b26e7569a0d08a8eb2a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b986a304309e943d24ab9f71857e6c1.png)
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【推荐3】同学们都知道:
表示5与
之差的绝对值,实际上也可理解为5与
两数在数轴上所对应的两点之间的距离.请你借助数轴进行以下探索:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/993be984-c5a5-4261-8339-af900ce21da7.png?resizew=514)
(1)已知点A在数轴上对应的数为a,点B在数轴上对应的数为b,且
,则
___________,
___________,点A和点B之间的距离为___________.
(2)设点Р在数轴上对应的数为
,若
,则
___________.
(3)如图,点M,N,P是数轴上的三点,点M表示的数为4,点N表示的数为
,动点Р表示的数为x.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/9aaa01da-f049-4097-95cf-277e1b9a85e9.png?resizew=449)
①若点Р在点M、N之间,则
___________.
②若点Р表示的数是
,现在有一蚂蚁从点Р出发,以每秒1个单位长度的速度向右运动,当经过多少秒时,蚂蚁所在的点到点M、点N的距离之和是8?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7ba690de4bdbdceb968265181a208f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/993be984-c5a5-4261-8339-af900ce21da7.png?resizew=514)
(1)已知点A在数轴上对应的数为a,点B在数轴上对应的数为b,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a441f0740087d0b22dd302c1515b5ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
(2)设点Р在数轴上对应的数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4784ce39d25d5b2a2c9f3713e4abbd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
(3)如图,点M,N,P是数轴上的三点,点M表示的数为4,点N表示的数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29418e5014731850c55565b6bf47aa41.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/9aaa01da-f049-4097-95cf-277e1b9a85e9.png?resizew=449)
①若点Р在点M、N之间,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e093018d5ac8c8bee584b70c4fd8c629.png)
②若点Р表示的数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
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