如图,在数轴上点
表示数
,点
表示数
,点
表示数
,
是最小的正整数,且
,
,
满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/f00c21d3-81dc-49ed-8fb9-8b61225ef459.png?resizew=175)
回答问题:
(1)点
为一动点,其对应的数为
,若
,求
的值;
(2)点
,
,
开始在数轴上运动,若点
以每秒
个单位长度的速度向左运动,同时,点
和点
分别以每秒
个单位长度和每秒
个单位长度的速度向右运动,设运动时间为
秒.请问在运动过程中,
的值是否随着时间
的变化而改变?若变化,请说明理由;若不变,请求其值.
(3)在
的条件下,若点
运动2秒后掉头向左继续运动,速度不变;
、
保持原来运动方向,速度不变继续运动,设继续运动时间为
秒.请问在运动过程中,是否存在某个时刻,
,
,
中某一点是另外两点的中点?如果有,请求出
的值;如果没有,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](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/1e9301795814d832772c7151e3280d6a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/f00c21d3-81dc-49ed-8fb9-8b61225ef459.png?resizew=175)
回答问题:
(1)点
![](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/6eebf9c5fa220910160a9c770ee80a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)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/bdaa19de263700a15fcf213d64a8cd57.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/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c7eb49a823f757461cd5260757b088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5634ee44d1e1316e03bbfc8e4828b15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c7eb49a823f757461cd5260757b088.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.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/5cd84a8f95166367063218ee03ffd5a7.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/5cd84a8f95166367063218ee03ffd5a7.png)
更新时间:2022-11-17 20:07:38
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】【探索新知】
如图1,点
在线段
上,图中共有3条线段:
、
和
,若其中有一条线段的长度是另一条线段长度的两倍,则称点
是线段
的“二倍点”.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/5f1e4d23-d2d2-444b-b08d-013001f4a7b3.png?resizew=576)
(1)一条线段的中点 这条线段的“二倍点”;(填“是”或“不是”)
【深入研究】
如图2,点A表示数
,点
表示数30,若点
从点
,以每秒3个单位的速度向点
运动,当
点到达点
时停止运动,设运动的时间为
秒.
(2)点
在运动过程中表示的数为(用含
的代数式表示);
(3)求
为何值时,点
是线段
的“二倍点”;
(4)同时点
从点
的位置开始,以每秒2个单位的速度向点
运动,并与点
同时停止,请直接写出点
是线段
的“二倍点”时
的值.
如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/5f1e4d23-d2d2-444b-b08d-013001f4a7b3.png?resizew=576)
(1)一条线段的中点 这条线段的“二倍点”;(填“是”或“不是”)
【深入研究】
如图2,点A表示数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e22e1223baf7cb3d53e668c2449609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(4)同时点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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【推荐2】阅读材料
材料:学习绝对值时,我们知道
表示数a的点与原点的距离,即
,也可以说
表示数轴上数a与数0对应的两点之间的距离,同理,数轴上数a和数b两点间的距离可以表示为
或
.
例如数轴上表示
和3的两点间的距离为
或
.
发现解题规律:
若
,则
或
;
若
,则
或
,得
或
;
若
,则
或
,得
或
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/0214f8fa-3176-4be6-9d25-74928450fc71.png?resizew=238)
结合上面的发现解决下列问题.
(1)数轴上表示
和4两点之间的距离是_______.
(2)若
,则
__________或_______.
(3)如图所示,当点A、B所表示的数分别为
和2时,是否存在一点P,使得点P到A、B两点的距离之和等于7?若存在,设点P表示的数为x,求x的值;若不存在,请说明理由.
材料:学习绝对值时,我们知道
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058315922cc0ae811d323920f7494219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e0408cc0b70dc84466e5c78795e2f4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058315922cc0ae811d323920f7494219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a31d1c786e88987bb3bc7c54b7b66819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec50d58e7988b4916682a19cac80fcb.png)
例如数轴上表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29114a874ea82743fee9b4732e43ea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d21d1a02e75a182c020464e6f91ef92.png)
发现解题规律:
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d54d2b6c0184bae5a741ffeee6ada74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da322ac8867e8a47c6588601078abf18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf2917e77945b30da7be9b48b0b317a.png)
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/889f96baaf8ca399cc299954f070aa96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f730b0824f0ec941aba874964252cf8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079569ee0eecbb18b0ddd2bdc546a74b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cc033406da2cdd342308972c6701f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a089c207e39a24d0d82aa853ac2bbb8c.png)
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518f0cfc9f804b5b68d5c77b74b48f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ee71fb543d1c5d20216d13c04c42f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d2e9eab226262ce6175c140d072422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092d7bedf860bbbc171c5df40b395ad8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/0214f8fa-3176-4be6-9d25-74928450fc71.png?resizew=238)
结合上面的发现解决下列问题.
(1)数轴上表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b0107b74bfbc9cebd258fda2b8b139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
(3)如图所示,当点A、B所表示的数分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc875a6ccf67b7c2f0bf4baadbdbb918.png)
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【推荐3】认真阅读下面的材料,完成有关问题.
材料:在学习绝对值时,我们知道了绝对值的几何含义,如|5-3|表示5、3在数轴上对应的两点之间的距离;|5+3|=|5-(-3)|,所以|5+3|表示5、-3在数轴上对应的两点之间的距离;|5|=|5-0|,所以|5|表示5在数轴上对应的点到原点的距离.
(1)一般地,点A、B、C在数轴上分别表示有理数x、-2、1,那么A到B的距离与A到C的距离之和可表示为 (用含绝对值的式子表示).
(2)利用数轴探究:
①满足|x-3|+|x+1|=6的x的所有值是 .
②|x-3|+|x+1|的最小值是 .
材料:在学习绝对值时,我们知道了绝对值的几何含义,如|5-3|表示5、3在数轴上对应的两点之间的距离;|5+3|=|5-(-3)|,所以|5+3|表示5、-3在数轴上对应的两点之间的距离;|5|=|5-0|,所以|5|表示5在数轴上对应的点到原点的距离.
(1)一般地,点A、B、C在数轴上分别表示有理数x、-2、1,那么A到B的距离与A到C的距离之和可表示为 (用含绝对值的式子表示).
(2)利用数轴探究:
①满足|x-3|+|x+1|=6的x的所有值是 .
②|x-3|+|x+1|的最小值是 .
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【推荐1】平移和翻折是初中数学两种重要的图形变化
(1)平移运动
①把笔尖放在数轴的原点处,先向负方向移动3个单位长度,再向正方向移动2个单位长度,这时笔尖的位置表示什么数?用算式表示以上过程及结果是
A.(+3)+(+2)=+5;B.(+3)+(﹣2)=+1;C.(﹣3)﹣(+2)=﹣5;D.(﹣3)+(+2)=﹣1
②一机器人从原点O开始,第1次向左跳1个单位,紧接着第2次向右跳2个单位,第3次向左跳3个单位,第4次向右跳4个单位,…,依次规律跳,当它跳2017次时,落在数轴上的点表示的数是 .
(2)翻折变换
①若折叠纸条,表示﹣1的点与表示3的点重合,则表示2017的点与表示 的点重合;
②若数轴上A、B两点之间的距离为2018(A在B的左侧,且折痕与①折痕相同),且A、B两点经折叠后重合,则A点表示 B点表示 .
③若数轴上折叠重合的两点的数分别为a,b,折叠中间点表示的数为 .(用含有a,b的式子表示)
(1)平移运动
①把笔尖放在数轴的原点处,先向负方向移动3个单位长度,再向正方向移动2个单位长度,这时笔尖的位置表示什么数?用算式表示以上过程及结果是
A.(+3)+(+2)=+5;B.(+3)+(﹣2)=+1;C.(﹣3)﹣(+2)=﹣5;D.(﹣3)+(+2)=﹣1
②一机器人从原点O开始,第1次向左跳1个单位,紧接着第2次向右跳2个单位,第3次向左跳3个单位,第4次向右跳4个单位,…,依次规律跳,当它跳2017次时,落在数轴上的点表示的数是 .
(2)翻折变换
①若折叠纸条,表示﹣1的点与表示3的点重合,则表示2017的点与表示 的点重合;
②若数轴上A、B两点之间的距离为2018(A在B的左侧,且折痕与①折痕相同),且A、B两点经折叠后重合,则A点表示 B点表示 .
③若数轴上折叠重合的两点的数分别为a,b,折叠中间点表示的数为 .(用含有a,b的式子表示)
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【推荐2】已知数轴上的两点
,
所表示的数分别是
和
,
为数轴上的原点,如果有理数
,
满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/ba35f59c-4661-489f-b4de-0a7664d30b8d.jpg?resizew=216)
(1)求
,
两点所对应的数分别为多少;
(2)点
,
分别以4个单位/秒和3个单位/秒的速度相向而行,则几秒后
,
两点相距1个单位长度?
(3)点
,
以(2)中的速度同时向右运动,点
从原点
出发以7个单位/秒的速度向右运动,是否存在常数
,使得
为定值,若存在请求出
值以及这个定值;若不存在,请说明理由.
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/c564da9bb2c3796d0f2de9b2e5002835.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/ba35f59c-4661-489f-b4de-0a7664d30b8d.jpg?resizew=216)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(3)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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7231b50797dd2d4e3252e7bebd8f1d4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐3】【背景知识】数轴是初中数学的一个重要工具,利用数轴可以将数与形完美地结合.研究数轴我们发现了许多重要的规律:若数轴上点
、点
表示的数分别为
、
,则
,
两点之间的距离
,线段
的中点表示的数为
.
【问题情境】如图,数轴上点
表示的数为
,点
表示的数为
,点
从点
出发,以每秒
个单位长度的速度沿数轴向右匀速运动,同时点
从点
出发,以每秒
个单位长度的速度向左匀速运动.设运动时间为
秒
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/3c45dd9c-ab52-427c-96ed-19394ec41355.png?resizew=258)
【综合运用】
(1)填空:
①
、
两点间的距离
______,线段
的中点
表示的数为______;
②用含
的代数式表示:
秒后,点
表示的数为______;点
表示的数为______;
(2)求当
为何值时,
;
(3)若点
为
的中点,点
为
的中点,点
在运动过程中,线段
的长度是否发生变化?若变化,请说明理由;若不变,请求出线段
的长.
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.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/f26c45b1c50349cb0e320dd627e2094d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f89a8b5cf6996a6455375e405bfb9d.png)
【问题情境】如图,数轴上点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a363df9127fb019f87ec53470c50dcc3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/3c45dd9c-ab52-427c-96ed-19394ec41355.png?resizew=258)
【综合运用】
(1)填空:
①
![](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/c26a46e7879436d532af3f4b6e258a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
②用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)求当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c656767a0d81446466f97b88eaee401.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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【推荐1】如图,在平面直角坐标系中,点
,
的坐标分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc37567b27049e2d9c9a3ce2cca5a99.png)
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7986887b83aab178ae991d8e4c2696e2.png)
,
,且
满足
,点
的坐标为
,
.
![](https://img.xkw.com/dksih/QBM/2023/4/19/3219970746884096/3259695621038080/STEM/392a1c9c6ed94ea39dad4d784689b7d0.png?resizew=198)
(1)求
,
的值及
的面积;
(2)若点
在
轴上,且
,求点
的坐标.
![](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/cfc37567b27049e2d9c9a3ce2cca5a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1158b401ca717391b6474d457721a6fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7986887b83aab178ae991d8e4c2696e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1158b401ca717391b6474d457721a6fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ff2912fd8d93b6e692936d95b727c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e77cebb661e99890a1410ba44a5a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc917f8dd29f5a5fcf4762052bb8fa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72634560f134103c60b8cb3746d29c37.png)
![](https://img.xkw.com/dksih/QBM/2023/4/19/3219970746884096/3259695621038080/STEM/392a1c9c6ed94ea39dad4d784689b7d0.png?resizew=198)
(1)求
![](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/e428e7a09732be85c1224e9c8f6a71c5.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6b580deb3ae611459b238deb01aa79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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【推荐2】已知数轴上
,
两点对应的数分别为
,
,且
,
满足
,点
对应的数为
,点
对应的数为
.
(1)求
,
的值;
(2)点
,
沿数轴同时出发相向匀速运动,点
的速度为
个单位
秒,点
的速度为
个单位
秒,若
秒时点
到原点的距离和点
到原点的距离相等,求
的值;
(3)在(2)的条件下,点
,
从起始位置同时出发.当
点运动到点
时,迅速以原来的速度返回,到达出发点后,又折返向点
运动.
点运动至
点后停止运动,当
停止运动时点
也停止运动.求在此过程中,
,
两点同时到达的点在数轴上对应的数.
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](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/4c4f6f0ff998bec092bc0f5e664abbe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77424dbdd740737b4ec75d62cdd08b27.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4333bb203d02814c146ed587b69ea69d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4333bb203d02814c146ed587b69ea69d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.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/36a1b09c653185842513e24ebba60bb3.png)
(3)在(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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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名校
【推荐1】阅读材料:点A,B在数轴上对应的数分别为a,b,我们把数轴上A,B两点之间的距离
表示为
.如
可以表示为3与1两数在数轴上所对应的两点之间的距离;
探索:
(1)数轴上表示4和
的两点之间的距离是_______.
(2)若
,则
_______.
(3)若使x所表示的点到表示3和
的点的距离之和为5,所有符合条件的整数x的和为_______.
(4)若点A,B在数轴上对应的数分别为
,6.
①点A以每秒2个单位长度沿数轴向左运动,点B以每秒2个单位长度同时沿数轴向右运动,则2秒后A,B两点间距离为_______;
②若A点静止不动,B点以每秒2个单位长度沿数轴向左运动,经过_______秒时A,B两点相距4个单位长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13880b9454c5942f164d934b1834783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2869da93f8f90e6f051d44d9f57ea2d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/1a6d28af-5be5-4a6a-bf06-cf07f36509fb.png?resizew=360)
探索:
(1)数轴上表示4和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67975e8db4824072f59a9c8952855c21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
(3)若使x所表示的点到表示3和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(4)若点A,B在数轴上对应的数分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
①点A以每秒2个单位长度沿数轴向左运动,点B以每秒2个单位长度同时沿数轴向右运动,则2秒后A,B两点间距离为_______;
②若A点静止不动,B点以每秒2个单位长度沿数轴向左运动,经过_______秒时A,B两点相距4个单位长度.
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