如图,数轴上点
表示的数为
,点
表示的数为16,点
从点
出发,以每秒3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2个单位长度的速度向左匀速运动,设运动时间为
秒(
)
两点间的距离等于________,线段
的中点表示的数为________;
(2)求当
为何值时,
?
(3)若点
为
的中点,当点
到原点距离为9时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.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/5963abe8f421bd99a2aaa94831a951e9.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/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
更新时间:2024-01-16 17:05:26
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相似题推荐
解答题-作图题
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【推荐1】一名快递员骑电动车从饭店出发送外卖,向东走了2千米到达小红家,继续向东走了3.5千米到达小明家,然后又向西走了7.5千米到达小刚家,最后回到饭店.以饭店为原点,以向东的方向为正方向,用一个单位长度表示1千米,点O、A、B、C分别表示饭店、小红家、小明家和小刚家.
(1)请你画出数轴,并在数轴上表示出点O,A,B,C的位置;
(2)小刚家距小红家多远?
(3)若小红步行到小明家每小时走5千米;小刚骑自行车到小明家每小时骑12千米,
若两个人同时分别从自己家出发,问两个人能否同时到达小明家,若不能同时,谁先到达?
(1)请你画出数轴,并在数轴上表示出点O,A,B,C的位置;
(2)小刚家距小红家多远?
(3)若小红步行到小明家每小时走5千米;小刚骑自行车到小明家每小时骑12千米,
若两个人同时分别从自己家出发,问两个人能否同时到达小明家,若不能同时,谁先到达?
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名校
【推荐2】已知
是最小的正整数,
是
的相反数,
,且
、
、
分别是点
、
、
在数轴上对应的数.动点
从点
出发沿数轴正方向匀速运动,动点
同时从点
出发也沿数轴正方向匀速运动,点
的速度是每秒2个单位长度,点
的速度是每秒1个单位长度,设点P的运动时间为t秒.
(1)
= ,
= ,
= ;
(2)当t=1时,线段PQ长为 ;
(3)若
、
出发的同时,动点
从点
出发沿数轴正方向匀速运动,速度为每秒4个单位长度.当点
追上点
后,点M立即按原速度沿数轴负方向匀速运动,求点
追上点Q后,再运动几秒,
到
的距离等于
到
的距离?
![](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/4a94acdfb41489d5694b5a64b9e99754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb168800047d929b98cc4d60df490fa.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/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/5963abe8f421bd99a2aaa94831a951e9.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)
![](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)
(2)当t=1时,线段PQ长为 ;
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/5a7aefe7-c33d-4d21-ad31-9f951ccd412f.png?resizew=500)
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【推荐3】(1)【操作感知】如图①,长方形透明纸上有一条数轴,
是周长为
的圆的直径,点
与数轴原点重合,将圆从原点出发沿数轴正方向滚动
周,点
落在数轴上的点
处;将圆从原点出发沿数轴负方向滚动半周,点
落在数轴上的点
处,折叠长方形透明纸,使数轴上的点
与点
重合,此时折痕与数轴交点表示的数为 .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/b8542b42-6ab5-4c87-874f-276393fa8d2c.png?resizew=766)
(2)【建立模型】折叠长方形透明纸,使得数轴上表示数
的点
与表示数
的点
重合,则折痕与数轴交点表示的数为 (用含
,
的代数式表示).
(3)【问题解决】若
,
,
为数轴上不同的三点,点
表示的数为
,点
表示的数为
,如果
,
,
三点中的一点到其余两点的距离相等,求点
表示的数;
(4)如图②,若
是周长为
的圆的直径,点
与数轴原点重合,将圆从原点出发沿数轴正方向滚动
周,点
落在数轴上的点
处;将圆从原点出发沿数轴负方向滚动
周,点
落在数轴上的点
处.将此长方形透明纸沿
,
剪开,将点
,
之间一段透明纸对折,使其左、右两端重合,这样连续对折
次后,再将其展开,求最右端折痕与数轴交点表示的数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/b8542b42-6ab5-4c87-874f-276393fa8d2c.png?resizew=766)
(2)【建立模型】折叠长方形透明纸,使得数轴上表示数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)【问题解决】若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(4)如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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【推荐1】【定义新知】在数轴上点M和点N表示的数为m、n,则可以用绝对值表示点M和点N之间的距离
,即
.
【初步应用】
(1)在数轴上,点A、B、C分别表示的数为
、1、x,解答下列问题:
①
_____;
②若
,则
的值为_____;
③若
,且x为负整数,则x的值为_____.
【综合应用】
(2)在数轴上,点D、E、F分别表示数
、5、12,动点P沿数轴以每秒3个单位长度从点D开始向点F运动,到达F点后立刻原速返回到D点;同时,动点Q沿数轴以每秒1个单位长度从点E开始向点F运动,到达F点后停止.设点P的运动时间为t秒,在整个运动过程中,若
,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f513553d63e9c87a70dd6aa57f97b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae24ef2d277d51bca43ec1667462eb6.png)
【初步应用】
(1)在数轴上,点A、B、C分别表示的数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7438a7ce828983491700770dfd1d51ed.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527c197e56ddef3bc3d36332aeea7abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6beabf7c29813b1b5f21f78917653077.png)
【综合应用】
(2)在数轴上,点D、E、F分别表示数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881036c9f806c8ceaf62976149b67cd9.png)
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【推荐2】阅读理解:如图①,数轴上两点间的距离可以用两点表示的数进行减法运算得到,例如A、B两点间的距离为
;B、C两点间的距离为
;A、C两点同的距离为
(大的数减去小的数).
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/ae46e432-0e68-4028-b93d-3bcfd88c70a6.png?resizew=297)
图① 图②
(1)若数轴上点A,B表示的数分别是
和2,则A、B两点间的距离为______.
(2)若数轴上点M表示的数是
,M、N两点间的距离为2,则点N表示的数是______.
(3)如图②,数轴上点A,B表示的数分别是
和6,动点P从点A出发,沿
方向以每秒2个单位长度的速度运动,点P运动多少秒时,B、P两点间的距离为4?此时点P表示的数是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfdd42b23680d7fa3181449412e386b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a580730babf8e99e52f1f46bfeb5f50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da20dfaa78de4bae6d77532cf315664.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/0bfdbe90-b0de-4332-a1d4-f812b831c6b2.png?resizew=234)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/ae46e432-0e68-4028-b93d-3bcfd88c70a6.png?resizew=297)
图① 图②
(1)若数轴上点A,B表示的数分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
(2)若数轴上点M表示的数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(3)如图②,数轴上点A,B表示的数分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
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【推荐3】阅读材料.
已知,在数轴上,原点为
,点
点
表示的数分别为
,
,点
为数轴上任意一点,若
,则点
为线段
的关联点.
(1)点
,点
,点
分别表示
,
,
,在这三个点中线段
的关联点是__________.
(2)点
点
表示的数分别为
,
,(
),点
表示的数为
,若点
是线段
的关联点,则
的最大值为__________(用含
,
的代数式表示).
(3)点
从
点出发,以每秒
个单位长度沿数轴向左运动,同时点
从点
出发,以每秒
个单位长度,沿数轴向左运动,设运动时间为
,当点
与点
都是线段
的关联点,且
时,求
的值.
已知,在数轴上,原点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8503c91f41abff35be33e4576e2cc315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/c6a46e678bf9d2df5ad4c782b3dc22f5.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/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)点
![](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/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad945f7fa3dd9a37d1f6114867f361d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,
与
相交于点
,
,
,
,点
从点A出发,沿
方向以
的速度往返运动,点
从点
出发,沿
方向以
的速度单向运动,
、
两点同时出发,当点
到达点A时,
、
两点同时停止运动,设点
的运动时间为
(s).
(1)求证:
.
(2)填空:线段
________
,线段
________
,(用含
的式子表示).
(3)连接
,当线段
经过点
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6344f71dcbc7083f7824b2097ebcdc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4009aa13093cc3865dcd51b371892160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cee49e97546d466ba3ee630e08cdc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d384993c07cee80d3cabef18b9416d5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc2d9b900111188aca83126dff97f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c74c393a2426ead4c230c913882fe5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/23/ce23b045-204d-4038-9947-7dbdc0295f25.png?resizew=133)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc7f5e61bbff0310b47f40f5a3f709d.png)
(2)填空:线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5740b4ab7c60534052033977fb20e7c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbbedd9ad877430c39ae6003d6ffb74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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)
【推荐2】在数轴上,动点A从原点O出发向负半轴匀速运动,同时动点B从原点O出发向正半轴匀速运动,动点B的速度是动点A的速度的两倍,经过5秒后A、B两点间的距离为15个单位长度,
(1)直接写出动点B的运动速度;
(2)若5秒后,动点A立即开始以原来的速度大小向正半轴运动,动点B继续按照原来的方式运动,问再经过多长时间OB=3OA(其中OB表示点B到原点的距离,OA表示点A到原点的距离)?
(1)直接写出动点B的运动速度;
(2)若5秒后,动点A立即开始以原来的速度大小向正半轴运动,动点B继续按照原来的方式运动,问再经过多长时间OB=3OA(其中OB表示点B到原点的距离,OA表示点A到原点的距离)?
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,C是线段AB上一点,M是AC的中点,N是CB的中点,如果AB=10cm,AC=6cm.求:(1)AM的长;(2)MN的长.
![](https://img.xkw.com/dksih/QBM/2019/3/10/2157746815090688/2159134737031168/STEM/d186ba450f7447bcbe157e35e80ffbb5.png?resizew=162)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐2】如图,点
,
是线段
上的点,点
为线段
的中点.
在线段
的延长线上,且
.
![](https://img.xkw.com/dksih/QBM/2022/1/8/2897047789092864/2898345052684288/STEM/7cbae810-8027-4f4a-a3e3-88aad8703089.png?resizew=323)
(1)求作点
(要求:尺规作图,不写作法,保留作图痕迹);
(2)若
,
,
,求线段
的长度;
(3)若
,请说明:点
是线段
的中点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](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/c1b3871ee2ef7c457066053e8c128f89.png)
![](https://img.xkw.com/dksih/QBM/2022/1/8/2897047789092864/2898345052684288/STEM/7cbae810-8027-4f4a-a3e3-88aad8703089.png?resizew=323)
(1)求作点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25936291abb6432ed5a710ebf0ea195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5796c725274de018e5b84b23359b4ad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d7d87dd435c94e95b42ef0e962ff20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90181d9c5c50b1393f6c44ea3e7811f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
您最近一年使用:0次