有理数 a、b、c 在数轴上的位置如图所示:
(1)比较 a、|b|、c 的大小(用“<”连接);
(2)若 m=|a+b|﹣|b﹣1|﹣|a﹣c|,求 1﹣2013•(m+c)2013 的值;
(3)若 a=﹣2,b=﹣3,c=
,且 a、b、c 对应的点分别为 A、B、C,问在数轴上是否存在一点 P,使 P 与 A 的距离是 P 与 C 的距离的 3 倍?若存在,请求出 P 点对应的有理数;若不存在,请说明理由.
(1)比较 a、|b|、c 的大小(用“<”连接);
(2)若 m=|a+b|﹣|b﹣1|﹣|a﹣c|,求 1﹣2013•(m+c)2013 的值;
(3)若 a=﹣2,b=﹣3,c=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://img.xkw.com/dksih/QBM/2019/1/3/2110708620140544/2113159118594048/STEM/1386dce519de4f03aa63e513608cc3a1.png?resizew=232)
更新时间:2019-01-06 23:36:08
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名校
【推荐1】如图,数轴上的点A,B,C,D,E对应的数分别为a,b,c,d,e,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/0ed21ea8-5cad-4ba1-9486-41d29f9492de.png?resizew=250)
(1)化简:|a﹣c|﹣2|b﹣a|﹣|b﹣c|;
(2)若这五个点满足每相邻两个点之间的距离都相等,且|a|=|e|,|b|=3,直接写出b﹣e的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/0ed21ea8-5cad-4ba1-9486-41d29f9492de.png?resizew=250)
(1)化简:|a﹣c|﹣2|b﹣a|﹣|b﹣c|;
(2)若这五个点满足每相邻两个点之间的距离都相等,且|a|=|e|,|b|=3,直接写出b﹣e的值.
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【推荐2】我们知道数轴上两点间的距离等于这两点所表示数的差的绝对值,例如:点
在数轴上分别对应的数为
,则
两点间的距离表示为
.
根据以上知识解决问题:
如图所示,在数轴上点
表示的数分别为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/41c0135a-19c9-47ac-ad1c-21060ba318d6.png?resizew=307)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e1d918e7fb74176679d526cdfc8fa16.png)
(2)若点
是数轴上一点,且
,则点
表示的数为 ;
(3)若点
从点
出发,以每秒3个单位长度的速度向右运动,同时,点
从
出发,以每秒1个单位长度向右运动.
到达点
后立即返回,当点
到达点
时,两点同时停止运动.运动时间为
秒时,求
的值(用含
的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ff2912fd8d93b6e692936d95b727c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2afd4acb164aad6d5a73989f5412730b.png)
根据以上知识解决问题:
如图所示,在数轴上点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc6f20d881bc0f2861eb0b0f0927bbf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/41c0135a-19c9-47ac-ad1c-21060ba318d6.png?resizew=307)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e1d918e7fb74176679d526cdfc8fa16.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eebf9c5fa220910160a9c770ee80a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/a0ed1ec316bc54c37c4286c208f55667.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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【推荐1】阅读理解:
定义:
,
,
为数轴上三点,若点
到点
的距离是它到点
的时距离的
(
为大于1的常数)倍,则称点
是
的
倍点,且当
是
的
倍点或
的
倍点时,我们也称
是
和
两点的
倍点.例如,在图1中,点
是
的2倍点,但点
不是
的2倍点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/120156d9-2ba7-4600-bd19-24a2e9d83d64.png?resizew=334)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/9d0d51ae-2aa3-4281-9875-43a023896e6a.png?resizew=385)
(1)特值尝试.
①若
,图1中,点______是
的2倍点.(填
或
)
②若
,如图2,
,
为数轴上两个点,点
表示的数是
,点
表示的数是4,数______表示的点是
的3倍点.
(2)周密思考:
图2中,一动点
从
出发,以每秒2个单位的速度沿数轴向左运动
秒,若
恰好是
和
两点的
倍点,求所有符合条件的
的值.(用含
的式子表示)
(3)拓展应用
数轴上两点间的距离不超过30个单位长度时,称这两点处于“可视距离”.若(2)中满足条件的
和
两点的所有
倍点
均处于点
的“可视距离”内,请直接写出
的取值范围.(不必写出解答过程)
定义:
![](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/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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95d247ffb2774bb7e22708b25daf7f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95d247ffb2774bb7e22708b25daf7f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71bbe792268ddc7adc67b489a3c61927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95d247ffb2774bb7e22708b25daf7f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71bbe792268ddc7adc67b489a3c61927.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/120156d9-2ba7-4600-bd19-24a2e9d83d64.png?resizew=334)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/9d0d51ae-2aa3-4281-9875-43a023896e6a.png?resizew=385)
(1)特值尝试.
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83d7cafb2557ba672aa7f847e502c26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e092578f45dc0505c79fad83eb0d56db.png)
(2)周密思考:
图2中,一动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)拓展应用
数轴上两点间的距离不超过30个单位长度时,称这两点处于“可视距离”.若(2)中满足条件的
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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【推荐2】如图1,点
是直线
上一点,射线
从
开始以每秒
的速度绕点
顺时针转动,射线
从
开始以每秒
的速度绕点
逆时针转动,当
、
相遇时,停止运动;将
、
分别沿
、
翻折,得到
、
,设运动的时间为
(单位:秒)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/b5969240-86fa-4e45-a439-004d1a8388ad.png?resizew=515)
(1)如图2,当
、
重合时,
_______
;
(2)当
时,
_______
,当
时,
_______
;
(3)如图3,射线
在直线
的上方,且
,在运动过程中,当射线
、
、
其中一条射线是另外两条射线组成角的平分线时,求出
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b4acddf579a77ac63e095936fe66c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e191a233da08a8840990ced95a6cc718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a52e349973e2c589b48066c9068a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/b5969240-86fa-4e45-a439-004d1a8388ad.png?resizew=515)
(1)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45739116f428f7c6c5964de72a1fa101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b28bd43d6858bfdaafcd11051251b66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08991e33572d0a7a830db8de33b88fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57127a1bae23a6d3a266ffae18601f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08991e33572d0a7a830db8de33b88fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(3)如图3,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f97fe5a6fa63ccb86a5b8fe0c9c754c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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【推荐3】如图,水平放置的甲容器内原有120mm高的水,乙容器中有一圆柱形实心铁块立放其中(圆柱形铁块的下底面完全落在乙容器底面上).现将甲容器中的水匀速 注入乙容器,且乙容器中水不外溢.甲、乙两个容器中水的深度y(mm)与注水时间x(min)之间的关系如图.
(1)乙容器中原有水的高度是_________mm,铁块的高度是_________mm;
(2)注水多长时间时,甲、乙两个容器中水的深度相同:
(3)若乙容器底面积为
(壁厚不计),直接写出乙容器中铁块的体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/17/72b8610e-37b1-417a-bca9-551bc926ba74.png?resizew=384)
(1)乙容器中原有水的高度是_________mm,铁块的高度是_________mm;
(2)注水多长时间时,甲、乙两个容器中水的深度相同:
(3)若乙容器底面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7322132c799ede438709f09667d61ac2.png)
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