已知a为最大的负整数,
,且
,
,请解决下列问题.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/81d3bc71-141b-4146-b5c9-3c4239d92278.png?resizew=220)
(1)a=______,b=______,c=______.
(2)在数轴上,a,b,c所对应的点分别为点A,B,C,点P为数轴上点A,B之间一点(不包括点A,B)其对应的数为x,化简:
.
(3)在(2)的条件下,点A,B,C开始在数轴上运动,若点A以每秒1个单位长度的速度向数轴负方向运动,同时,点B和点C分别以每秒2个单位长度和每秒5个单位长度的速度向数轴正方向运动.设运动时间为t秒,则
的值是否随时间t的变化而变化?若变化,请说明理由;若不变,请求出该值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f9c850f808c86c9d986d6111c64efd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e489645a4930d59e21720c0c44ac318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a38efe32b0f0306f1dd1158ac2bd6e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/81d3bc71-141b-4146-b5c9-3c4239d92278.png?resizew=220)
(1)a=______,b=______,c=______.
(2)在数轴上,a,b,c所对应的点分别为点A,B,C,点P为数轴上点A,B之间一点(不包括点A,B)其对应的数为x,化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc822f9fe9bdc0dbe05140f8afacd47.png)
(3)在(2)的条件下,点A,B,C开始在数轴上运动,若点A以每秒1个单位长度的速度向数轴负方向运动,同时,点B和点C分别以每秒2个单位长度和每秒5个单位长度的速度向数轴正方向运动.设运动时间为t秒,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5634ee44d1e1316e03bbfc8e4828b15a.png)
更新时间:2022-12-02 13:50:39
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,数轴上A、B两点表示的数分别是
和3,将这两点在数轴上以相同的速度同时相向运动,若A、B分别到达M、N两点,且满足
(k为正整数),我们称A、B两点完成了一次“准相向运动”.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/58d64b6b-c981-4566-98d8-0aafa7f37498.png?resizew=403)
(1)A、B两点之间的距离为
(2)若A、B两点完成了一次“准相向运动”.
①当
时,M、N两点表示的数分别为 , ;
②当k为任意正整数时,求M、N两点表示的数(用含字母k的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f0486922fc901a1d20117730bd52aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/58d64b6b-c981-4566-98d8-0aafa7f37498.png?resizew=403)
(1)A、B两点之间的距离为
(2)若A、B两点完成了一次“准相向运动”.
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
②当k为任意正整数时,求M、N两点表示的数(用含字母k的式子表示).
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,点A,B是数轴上的两点.点P从原点出发,以每秒2个单位的速度向点B作匀速运动;同时,点Q也从原点出发用2s到达点A处,并在A处停留2s,然后按原速度向点B运动,速度为每秒4个单位.最终,点Q比点P早2s到达B处.设点P运动的时间为ts.
![](https://img.xkw.com/dksih/QBM/2019/12/11/2352728677466112/2356221308616704/STEM/3371b42612184a0bb26349fffae5cc5e.png?resizew=275)
(1)点A表示的数为 ;当t=4s时,P、Q两点之间的距离为 个单位长度;
(2)求点B表示的数;
(3)从P、Q两点同时出发至点P到达点B处的这段时间内,t为何值时,P、Q两点相距3个单位长度?
![](https://img.xkw.com/dksih/QBM/2019/12/11/2352728677466112/2356221308616704/STEM/3371b42612184a0bb26349fffae5cc5e.png?resizew=275)
(1)点A表示的数为 ;当t=4s时,P、Q两点之间的距离为 个单位长度;
(2)求点B表示的数;
(3)从P、Q两点同时出发至点P到达点B处的这段时间内,t为何值时,P、Q两点相距3个单位长度?
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】计算:
(1)
|3
|
.
(2)3(x+2)2=12.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4136998d5d68599561e1cd52380f4ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071ff10740d0ef09e9b6ab0bf8a92283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46546e9e2622b977169814ca6844b589.png)
(2)3(x+2)2=12.
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐1】已知,a、b、c在数轴上的位置如图.
(2)化简:|a+1|-|c-b|-|b-1|+|c-2a|;
(3)若a+b+c=0,且b与-1的距离和c与-1的距离相等,求2(b+2c)-a(a-1)-(c-b)的值.
(2)化简:|a+1|-|c-b|-|b-1|+|c-2a|;
(3)若a+b+c=0,且b与-1的距离和c与-1的距离相等,求2(b+2c)-a(a-1)-(c-b)的值.
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】已知:
是最小的正整数,且
,
,
满足
,请回答下列问题:
(1)
______,
______,
______;
(2)如图,
,
,
所对应的点分别为
、
、
,点
是一动点,其对应的数为
,点
在0到2之间运动(包括0和2).请化简式子:
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/2ae503e6-cdce-4034-b0b3-978aa1ad0979.png?resizew=273)
(3)在(1)(2)的条件下,点
、
、
开始在数轴上运动,若点
以每秒1个单位长度的速度向左运动,同时点
和点
分别以每秒2个单位长度和5个单位长度的速度向右运动,假设
秒钟后,若点
与点
之间的距离表示
,点
与点
之间的距离表示为
.请问:当
时,求出此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](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/ac6796785855cd1eb25403fbe4009cdf.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
(2)如图,
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a2d5bb17f53f4738e0d35aacbee8e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/2ae503e6-cdce-4034-b0b3-978aa1ad0979.png?resizew=273)
(3)在(1)(2)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9de5e6da9f2d009505854d1defa6758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐3】阅读材料:对于任意一个两位数
,如果
满足个位数字与十位数字互不相同,且都不为零,那么我们称这个两位数为“迥异数”,将一个“迥异数”的个位数字与十位数字对调后得到一个新的两位数,把这个新两位数与原两位数的和与
的商记为
,例如:
,对调个位数字与十位数字得到新的两位数
,新两位数与原两位数的和为
,和与
的商为
,所以
.
根据上述定义,回答下列问题:
(1)填空:
下列两位数
,
,
中,是“迥异数”的为______;
计算
______.
(2)如果一个“迥异数”
的十位数字是
,个位数字是
,且
,请求出“迥异数”
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0b71b8d2c183154221f717ce09077b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78daf39ea522a6b4584ca2b699ba720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/814397354c2ae1cb08e0271305970811.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc228f5ffd23ca544083fe5c7bdd5de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0b71b8d2c183154221f717ce09077b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fc7ed1ea9a0656c5ec712b4d1f3e4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3428c80d1f9a98e274a146c61f308246.png)
根据上述定义,回答下列问题:
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c696d722e1b4b938c7a956ff83f733bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3ffadc9aef7daa259cf9ca752c8c39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2142368b10234525598c5c32dad846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9340a9ada4bc86f0ad565f15a86a07bd.png)
(2)如果一个“迥异数”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ab169602232fe24ca3972892169f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b78c96cff005da36f58b4d9cbf804f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次