我们知道,
可以理解为
,它表示:数轴上表示数
的点到原点的距离,这是绝对值的几何意义.进一步地,数轴上的两个点
,分别用数
表示,那么
两点之间的距离为
,反过来,式子
的几何意义是:数轴上表示数
的点和表示数
的点之间的距离.利用此结论,回答以下问题:
(1)数轴上表示数8的点和表示数3的点之间的距离是_________,数轴上表示数
的点和表示数
的点之间的距离是__________.
(2)数轴上点
用数
表示,若
,那么
的值为_________.
(3)数轴上点
用数
表示:
①若
,那么
的值是________.
②当
时,数
的取值范围是________,这样的整数
有________个.
③
有最小值,最小值是___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f50db7df4039c3fb42c49ea377228c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e41afc344dae839bbe6ba72828da5d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6177dde43e06131a15591560a57608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a493850638eef5019f51f458a780d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(1)数轴上表示数8的点和表示数3的点之间的距离是_________,数轴上表示数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
(2)数轴上点
![](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/cb3f8e3953d16f9030880a789acaab28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)数轴上点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c19aa34e1898e43c42897a35c49bcac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4700c782be7bbbe1c1bc54a2491734bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/789dc3d614fbf72e3177ae9309a23c06.png)
18-19七年级上·广东深圳·期中 查看更多[5]
广东省深圳市高级中学2018-2019学年七年级上学期期中数学试题(已下线)专题03 绝对值的几何意义-【微专题】2022-2023学年七年级数学上册常考点微专题提分精练(人教版)(已下线)专题03 绝对值的几何意义-【微专题】2022-2023学年七年级数学上册常考点微专题提分精练(苏科版)(已下线)七年级上学期期中【压轴54题专练】-2022-2023学年七年级数学上学期考试满分全攻略(人教版)(已下线)专题03 绝对值培优专项训练-【好题汇编】备战2023-2024学年七年级数学上学期期末真题分类汇编(广东专用)
更新时间:2020-03-31 23:22:46
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】如图,在数轴上点A表示的数为a,点B表示的数为b,且a,b满足|a+2|+(3a+b)2=0,O为原点.
![](https://img.xkw.com/dksih/QBM/2017/12/25/1846083882647552/1851113834184704/STEM/c1f9312c2c604e08bde1cd599887764c.png?resizew=278)
(1)则a= ,b= ;
(2)若动点P从点A出发,以每秒1个单位长度的速度沿数轴向右匀速运动,
①当PO=2PB时,求点P的运动时间t;
②当点P运动到线段OB上时,分别取AP和OB的中点E、F,则
的值是否为一个定值?如果是,求出定值,如果不是,说明理由.
![](https://img.xkw.com/dksih/QBM/2017/12/25/1846083882647552/1851113834184704/STEM/c1f9312c2c604e08bde1cd599887764c.png?resizew=278)
(1)则a= ,b= ;
(2)若动点P从点A出发,以每秒1个单位长度的速度沿数轴向右匀速运动,
①当PO=2PB时,求点P的运动时间t;
②当点P运动到线段OB上时,分别取AP和OB的中点E、F,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25eb31497e3e62a61bfdc827af33eea4.png)
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【推荐2】在数轴上,把原点记作点O,表示数a的点记作点A.对于数轴上任意一点P(不与点O、点A重合),将线段
与线段
的长度之比定义为点P关于点A的幸福值,记作
,即
,例如:点P表示的数为1,点A表示的数为3,因为
,
,所以
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/ae77a3fb-1338-42d0-a3dc-942500470900.png?resizew=361)
(1)当点P是线段
的中点时,点P关于点A的幸福值
;
(2)若点P表示的数为
,点A表示的数为3,点P关于点A的幸福值
;
(3)若点P表示的数为2,点A表示的数为a,点P关于点A的幸福值
,求点A表示的数a;
(4)若点P表示的数为p,点A表示的数为a,
,则点P关于点A的幸福值
;
(5)点
、点
为数轴上两个不同的点,并且点
与
关于原点对称,点
表示的数为m,点A、点B分别表示数a、2,若
,则a、m需满足条件: .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481f4db5b88b458b5866ac8e386b7f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0a8326a8aa6fab51c9f3481cf63991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6183ebae6c95c17a4e0ab017e12ae8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33df53e8d9b2b624766a2154b1914a6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/ae77a3fb-1338-42d0-a3dc-942500470900.png?resizew=361)
(1)当点P是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be228e372034c59c03b4b98c61a7d14.png)
(2)若点P表示的数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c030203651afe65d81af7e21476eaafb.png)
(3)若点P表示的数为2,点A表示的数为a,点P关于点A的幸福值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77083c0a253c7bfb7cad772eadc92c4f.png)
(4)若点P表示的数为p,点A表示的数为a,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f9cbeaa914f98312f8bd5f17e71db8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be228e372034c59c03b4b98c61a7d14.png)
(5)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7efdb8965effe6ad57c10b007c8407a4.png)
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解答题-计算题
|
较难
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【推荐3】对于数轴上不同的三个点
,
,
,若满足
,则称点
是点
关于点N的“
倍分点”.例如,如图.在数轴上,点
,
表示的数分别是
,1,可知原点
是点
关于点
的“2倍分点”,原点
也是点
关于点
的
倍分点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/0f8a8b76-07cd-4d04-b4e5-d490e0c06c2a.png?resizew=201)
在数轴上,已知点
表示的数是
,点
表示的数是4,点
为数轴上一动点,其对应的数为
.
(1)若点
为线段
的中点.则点
对应的数
= ;
(2)若点
在移动的过程中,其到点
、点
的距离之和为8,求此时点
对应的数
的值;
(3)若点
在线段
上,且点
是点
关于点
的“5倍分点”,则点
表示的数是 ;
(4)若点
在数轴上,
,且点
是点
关于点
的“k倍分点”,则k的值是 ;
(5)若点
从点
出发,以每秒3个单位长度的速度沿数轴正方向运动.当点
运动t秒时,在
,
,
三个点中,恰有一个点是另一个点关于第三个点的“
倍分点”,直接写出t的值是 ;
(6)对于数轴上的三点,又给出如下定义:若当其中一个点与其他两个点的距离恰好满足2倍关系时,则称该点是其他两个点的“2倍点”.如图,原点O是点
,
的2倍点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/5b0319d0-d75b-494e-8960-c467a881a3da.png?resizew=278)
现在,点
、点
分别以每秒4个单位长度和每秒1个单位长度的速度同时向右运动,同时点
以每秒3个单位长度的速度从表示数5的点向左运动.设出发t秒后,点
恰好是点
,
的“2倍点”,请直接写出此时的t值是 .
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf295b3a70996eb918ae1a823e1747c.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/f0a532e15e232cb4b99a8d4d07c89575.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/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/1dde8112e8eb968fd042418dd632759e.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/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/0f8a8b76-07cd-4d04-b4e5-d490e0c06c2a.png?resizew=201)
在数轴上,已知点
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2297930d54a0452220d963bfef6a616a.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2297930d54a0452220d963bfef6a616a.png)
(2)若点
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2297930d54a0452220d963bfef6a616a.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(4)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c13dc45ca78ee430f6746262c2728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(5)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(6)对于数轴上的三点,又给出如下定义:若当其中一个点与其他两个点的距离恰好满足2倍关系时,则称该点是其他两个点的“2倍点”.如图,原点O是点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/5b0319d0-d75b-494e-8960-c467a881a3da.png?resizew=278)
现在,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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
您最近一年使用:0次
解答题-计算题
|
较难
(0.4)
【推荐1】同学们都知道,
表示2与
的差的绝对值,实际上位可理解为在数轴上正数2对应的点与负数
对应的点之间的距离,试探索:
(1)
;如果
,则
.
(2)求
的最小值,并求此时
的取值范围;
(3)由以上探索已知
,则求
的最大值与最小值;
(4)由以上探索及猜想,计算
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7fe6ec96b0ca7296734d4c1afc1b80a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29418e5014731850c55565b6bf47aa41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29418e5014731850c55565b6bf47aa41.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84788130977af4748e3909444f5be9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5bbe5263e30a5909995e7f959eb036.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695797cbadfe77a292710550f4482427.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cee4818606bf5428f48c59e6727d3b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
(3)由以上探索已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef00354186493e1a2a3b9123c474926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c836b007091110c41ebca924d9a464f8.png)
(4)由以上探索及猜想,计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95880ec3885eff16bfff10769c68779a.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】认真阅读下面的材料,完成有关问题.
材料:在学习绝对值时,老师教过我们绝对值的几何含义,如
表示
、
在数轴上对应的两点之间的距离;
,所以
表示
、
在数轴上对应的两点之间的距离;
,所以
表示
在数轴上对应的点到原点的距离.
一般地,点
、点
在数轴上分别表示有理数
、
,那么点
、点
之间的距离可表示为
.
(1)点
、
、
在数轴上分别表示有理数
、
、
,那么点
到点
的距离与点
到点
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
的
的取值范围是__________.
②满足
的
的所有值是__________.
③设
,当
的值取在不小于
且不大于
的范围时,
的值是不变的,而且是
的最小值,这个最小值是_____.
(3)拓展:
①
的最小值为__________.
②
的最小值为__________.
③
的最小值为__________,此时
的取值范围为__________.
材料:在学习绝对值时,老师教过我们绝对值的几何含义,如
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d56a81560a26fb54ac926e4b0c1a893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1152253c0df141b3065f79e8c58265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3358f39333debf45f45282cc69f66f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0315d3fcfb4ed1456aac46293f0b115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70686e860c2c1f61928cd70546e16ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
一般地,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/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/a13880b9454c5942f164d934b1834783.png)
(1)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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)利用数轴探究:
①满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be2bb0289bb3fd37f20ffd120212bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346a3450444b0b80a864b51756e71bc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
③设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3874bb7e16dfaefbc6f22e536bd58766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(3)拓展:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61c070ebf11edb1cea3de2238cfa33b.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7167c74880c15aa17025fefda0ab1a34.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79f540a5d54a09c791ac71150aa721f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次