观察下列每对数在数轴上的对应点间的距离,3与5,4与
,
与3,
与
.并回答下列各题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/ddbd2ae0-8c91-41cb-85ea-38aad43a75a5.png?resizew=319)
(1)数轴上表示4和
两点间的距离是 ,表示
和
两点间的距离是 ;
(2)若数轴上的点
表示的数为
,点
表示的数为
.
①数轴上
、
两点间的距离可以表示为 (用含
的代数式表示);
②如果数轴上
、
两点间的距离为
,求
的值.
(3)直接写出代数式
的最小值为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/ddbd2ae0-8c91-41cb-85ea-38aad43a75a5.png?resizew=319)
(1)数轴上表示4和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
(2)若数轴上的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
①数轴上
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
②如果数轴上
![](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/ae5a64bcb77f5f64e4af6930c249a270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)直接写出代数式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c1354bc3fa247c93df657b277958bc.png)
更新时间:2022-11-27 14:30:24
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【推荐1】如图,点A,B在数轴上表示的数分别为-4和+16,A,B两点间的距离可记为AB
![](https://img.xkw.com/dksih/QBM/2019/9/28/2300676116938752/2303294376378368/STEM/5b2f3a35d71446cf895fda2bd74a7e10.png?resizew=183)
(1) 点C在数轴上A,B两点之间,且AC=BC,则C点对应的数是_________
(2) 点C在数轴上A,B两点之间,且BC=4AC,则C点对应的数是_________
(3) 点C在数轴上,且AC+BC=30,求点C对应的数?
(4) 若点A在数轴上表示的数是a,B表示的数是b,则AB=_________
![](https://img.xkw.com/dksih/QBM/2019/9/28/2300676116938752/2303294376378368/STEM/5b2f3a35d71446cf895fda2bd74a7e10.png?resizew=183)
(1) 点C在数轴上A,B两点之间,且AC=BC,则C点对应的数是_________
(2) 点C在数轴上A,B两点之间,且BC=4AC,则C点对应的数是_________
(3) 点C在数轴上,且AC+BC=30,求点C对应的数?
(4) 若点A在数轴上表示的数是a,B表示的数是b,则AB=_________
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【推荐2】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,在数轴上,若C点到A点的距离刚好是3,则C点叫做A点的“幸福点”,若C点到A、B两点的距离之和为8,则C点叫做A、B两点的“幸福中心”.
(1)如图1,点A表示的数为
,则 A 的幸福点 C 所表示的数应该是_________;
(2)如图2,M、N为数轴上两点,点M所表示的数为4,点N所表示的数为
,点C是M、N的幸福中心,则C所表示的数是多少?
(3)如图3,点A表示的数是0,点B表示的数是4,若点A、点B同时以1个单位长度/秒的速度向左运动,与此同时点P从10处以2个单位长度/秒的速度向左运动,经过多长时间后,点A、点B、点P三点中其中一点是另外两点的“幸福中心”.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/87e8af7a-301f-43d0-ad51-62ee1097fddc.jpg?resizew=327)
(1)如图1,点A表示的数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(2)如图2,M、N为数轴上两点,点M所表示的数为4,点N所表示的数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(3)如图3,点A表示的数是0,点B表示的数是4,若点A、点B同时以1个单位长度/秒的速度向左运动,与此同时点P从10处以2个单位长度/秒的速度向左运动,经过多长时间后,点A、点B、点P三点中其中一点是另外两点的“幸福中心”.
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【推荐3】如图,已知数轴上点A表示的数为
,B,C是数轴上原点右侧的点,其中,
,B是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/c0b2b590-1955-4e28-ba31-c389fdb029d4.png?resizew=243)
(1)点B表示的数是______,点C表示的数是______;
(2)动点M从点A出发,以每秒2个单位长度的速度向右匀速运动,多少秒后点M与点C相距3个单位长度?
(3)若将数轴看作是一条河,数轴的正方向表示水流的方向,数轴上的一个单位长度表示
的河流长度.小明和小军乘坐的大型轮船在静水中的速度为
,小红乘坐的小型轮船在静水中的速度为
,水流速度为
.小明和小红分别从A,B两码头同时出发顺流而下,同时小军从C码头出发逆流而上,小明,小军和小红分别到达码头C、码头A、码头C之后均停止运动,令运动时间为
,当小红到小明的距离等于到小军距离的2倍时,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/c0b2b590-1955-4e28-ba31-c389fdb029d4.png?resizew=243)
(1)点B表示的数是______,点C表示的数是______;
(2)动点M从点A出发,以每秒2个单位长度的速度向右匀速运动,多少秒后点M与点C相距3个单位长度?
(3)若将数轴看作是一条河,数轴的正方向表示水流的方向,数轴上的一个单位长度表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3fb33e7fb8709bd8d5db686644d50b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851f13f6027de14290813259efd440cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2583d7a101cb852e0f29d152cb5cc54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca446964b2acfb92b4c85e6bdbacd0b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ee630252dc9ec9c8453d1561a81743.png)
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【推荐1】已知点A,
在数轴上分别表示有理数
,
,A,
两点之间的距离表示为
.
(1)当A,
两点中有一点在原点时,不妨设点A在原点,如图1,
;
(2)当A,
两点都不在原点时,
①如图2,点A,
都在原点的右边,
;
②如图3,点A,
都在原点的左边,
;
③如图4,点A,
在原点的两边,
.
综上,数轴上A,
两点的距离
.
利用上述结论,回答以下三个问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/886ee14c-b46b-4e27-8aae-06061bbed66b.png?resizew=491)
(1)用绝对值表示
和
的两点之间的距离是________,若该距离为4,则
________;
(2)
的最小值是________,当取最小值时满足的整数
共有________个,其总和为________;
(3)若未知数
,
满足
,则代数式
的最大值是________,最小值是________.
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)当A,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09d04217c41f68f53461d168332e224.png)
(2)当A,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①如图2,点A,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e94d586928204a00b046109ef5f677.png)
②如图3,点A,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488c6a991cad6193d4d7fa163c01b290.png)
③如图4,点A,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3303b6fa5aa18200fd040c22fc439f.png)
综上,数轴上A,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2afd4acb164aad6d5a73989f5412730b.png)
利用上述结论,回答以下三个问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/886ee14c-b46b-4e27-8aae-06061bbed66b.png?resizew=491)
(1)用绝对值表示
![](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/4ec0618ae3a4fde6d6220010af229b9a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40cfb936d8d761ccbe51b7892bd898a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若未知数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2308fa10e198eb22827a86fef05f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf99adccc80f28343fedd8d0aad7429.png)
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【推荐2】已知数轴上有
、
、
三个点,分别表示有理数
、
、10,动点
从
出发,以每秒1个单位长度的速度向终点
移动,设移动时间为
秒.若用
,
,
分别表示点
与点
、点
、点
的距离,试回答以下问题.
![](https://img.xkw.com/dksih/QBM/2022/2/14/2916334319091712/2920331504500736/STEM/4096ed7a-e379-436e-9d9e-98f2a22c458c.png?resizew=213)
(1)当点
运动10秒时,
______,
______,
______;
(2)当点
运动了
秒时,请用含
的代数式表示
到点
、点
、点
的距离:
______,
______,
______;
(3)经过几秒后,点
到点
、点
的距离相等?此时点
表示的数是多少?
(4)当点
运动到
点时,点
从
点出发,以每秒3个单位长度的速度向
点运动,
点到达
点后,再立即以同样的速度返回,运动到终点
.在点
开始运动后,
、
两点之间的距离能否为4个单位长度?如果能,请直接写出点
表示的数;如果不能,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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd701839451bde3c9dff71cf92fa40d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e22e1223baf7cb3d53e668c2449609.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2022/2/14/2916334319091712/2920331504500736/STEM/4096ed7a-e379-436e-9d9e-98f2a22c458c.png?resizew=213)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5745e2dc1d5308872c68ae932cd13ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0f08eb47a5429245f4c162d0355a45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e7d551cca653e2d638c8cab4c2fda8.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/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/5745e2dc1d5308872c68ae932cd13ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0f08eb47a5429245f4c162d0355a45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e7d551cca653e2d638c8cab4c2fda8.png)
(3)经过几秒后,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)
(4)当点
![](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/acc290b44635265137fdf13146b6a6d9.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/acc290b44635265137fdf13146b6a6d9.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/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/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐3】阅读信息:
信息一:
的几何意义是x与y两数在数轴上所对应的两点之间的距离.例如
的几何意义是3与1两数在数轴上所对应的两点之间的距离.
信息二:对于有理数a,b,n,d,若
,则称a和b关于n的“双倍关系值”为d.例如,
,则6和3关于1的“双倍关系值”为5.
根据以上信息回答下列问题:
(1)
和5关于2的“双倍关系值”为______.
(2)若a和3关于1的“双倍关系值”为4,求a的值;
(3)若
和
关于1的“双倍关系值”为2,
和
关于2的“双倍关系值”为2,
和
关于3的“双倍关系值”为2,…,
和
关于21的“双倍关系值”为2.
①
的最大值为______;
②
的值为______(用含
的式子表示).
信息一:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a25d8f9593923203536dc9264f7060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2869da93f8f90e6f051d44d9f57ea2d9.png)
信息二:对于有理数a,b,n,d,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcace16f04285e27b741b6f73f4a0e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2124ae80a6840d8ca300e895b113bc6.png)
根据以上信息回答下列问题:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
(2)若a和3关于1的“双倍关系值”为4,求a的值;
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f7dcce39f3d4dc6b7faf84dc1d0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066bed69d03aee63a37e1259f6599e55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc29ee719feeedfbc8c529cf11348abf.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222c12bccd0b40100273e4a4f7aa3948.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aada031940c956eb29ba47c11a5c502d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f7dcce39f3d4dc6b7faf84dc1d0a1.png)
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【推荐1】对于有理数
,
,定义一种新运算“
”,规定
.
(1)若
,计算
的值.
(2)当
,
在数轴上的位置如图所示,化简
.
(3)已知
,
,求
的值.
![](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/091e86ca89e484b331fd90125a5e5af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0fe9d8ac4f3ccb36febcb2080d86b5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/25/6341b80a-5f18-48bf-ad1d-7d8bb5eb9f8b.png?resizew=224)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88514f0b257c510af43c840ed56e905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5597cb382642e0b153ac3e5294c48e.png)
(2)当
![](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/fe5597cb382642e0b153ac3e5294c48e.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ca300ba8f7dcba05f02f9228b10ae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐2】阅读下面材料:
点
、
在数轴上分别表示数
、
.
、
两点之间的距离表示为
.则数轴上
、
两点之间的距离
.
回答下列问题:
(1)数轴上表示
和
的两点之间的距离是 ;数轴上表示
和
的两点之间的距离是 .
(2)数轴上表示
和
的两点
和
之间的距离是 ;如果
,那么
为 .
(3)当
取最小值时,符合条件的整数
有 .
(4)令
,问,当
取何值时,
最小,最小值为多少?请求解.
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/3f4dfec890cdfdda355e19463f3be813.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/99b60a6e9515c220c8554719e399ec47.png)
回答下列问题:
(1)数轴上表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
(2)数轴上表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.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/ae5a64bcb77f5f64e4af6930c249a270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40cfb936d8d761ccbe51b7892bd898a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(4)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305ad74ab4e92dd9454d6799876d06c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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名校
解题方法
【推荐3】如图,小亮把东、西大街表示成一条数轴,把公交站的位置用数轴上的点表示出来,其中钟楼站的位置记为原点,正东方向,公交方向为正方向,公交车的一站地为一个单位长度(假设每站距离相同).请你根据图形回答下列问题:
![](https://img.xkw.com/dksih/QBM/2020/9/16/2551277520134144/2554755611197441/STEM/277dfb30-5ae1-4bb8-a457-e75350177529.png)
(1)到广济街的距离等于2站地的是 .
(2)到这8个站距离之和最小的站是否存在?若存在,是哪个站?最小值是多少?若不存在,请说明理由.
(3)如果用
表示数轴上一点表示的数,那么
表示这个点与1对应点的距离为2,请你根据以上信息回答下列下面问题:
①若
,请你写出满足条件
的所有站表示的数.
②若
,请你写出满足条件
的值.
![](https://img.xkw.com/dksih/QBM/2020/9/16/2551277520134144/2554755611197441/STEM/277dfb30-5ae1-4bb8-a457-e75350177529.png)
(1)到广济街的距离等于2站地的是 .
(2)到这8个站距离之和最小的站是否存在?若存在,是哪个站?最小值是多少?若不存在,请说明理由.
(3)如果用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca2e7b7f4d3d4352d5ee09581740e91.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d8eb613466b4da9092a5edc3f789b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d812aa15390eb2ffe5f52c06860f2b33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】阅读与思考
下面是一篇数学小论文,请仔细阅读并完成相应的任务.
“三点共线模型”及其应用
背景知识:通过初中学习,我们掌握了基本事实:两点之间线段最短.根据这个事实,我们证明了:三角形两边的和大于第三边.根据不等式的性质得出了:三角形两边的差小于第三边.
知识拓展:如图,在同一平面内,已知点
和
为定点,点
为动点,且
为定长(令
),可得线段
的长度为定值.我们探究
和两条定长线段
,
的数量关系及其最大值和最小值:当动点
不在直线
上时,如图
,由背景知识,可得结论
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/138c0eff-3d7a-4bc1-aaa4-7b1e5c64e431.png?resizew=519)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/a8bcd1d9-87fb-401f-a910-4adb5a446c62.png?resizew=123)
当动点
在直线
上时,出现图
和图
两种情况.在图
中,线段
取最小值为
;在图
中,线段
取最大值为
.
模型建立:在同一平面内,点
和
为定点,点
为动点,且
,
为定长(
),则有结论
≥
,
.当且仅当点
运动至
,
,
三点共线时等成立.
我们称上述模型为“三点共线模型”,运用这个模型可以巧妙地解决一些最值问题.
任务:
(1)上面小论文中的知识拓展部分.主要运用的数学思想有 ;(填选项)
A.方程思想 B.统计思想 C.分类讨论 D.函数思想
(2)已知线段
,点
为任意一点,那么线段
和
的长度的和的最小是
;
(3)已知
的直径为
,点
为
上一点,点
为平面内任意一点,且
,则
的最大值是
;
(4)如图4,
,矩形
的顶点
、
分别在边
、
上,当
在
边上运动时,
随之在
上运动,矩形
的形状保持不变.其中
,
.运动过程中,求点
到点
的最大距离.
下面是一篇数学小论文,请仔细阅读并完成相应的任务.
“三点共线模型”及其应用
背景知识:通过初中学习,我们掌握了基本事实:两点之间线段最短.根据这个事实,我们证明了:三角形两边的和大于第三边.根据不等式的性质得出了:三角形两边的差小于第三边.
知识拓展:如图,在同一平面内,已知点
![](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/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7191f09f447b5929962f75f52d2f4fbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8b3ab2340d5408301b3b21dac36a31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85533eb844a5571ccee02328a17b24e4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/138c0eff-3d7a-4bc1-aaa4-7b1e5c64e431.png?resizew=519)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/a8bcd1d9-87fb-401f-a910-4adb5a446c62.png?resizew=123)
当动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b65912784543a113b1e1c86e162b4537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6926cf539cca1f818f391aa52eeb44.png)
模型建立:在同一平面内,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/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7191f09f447b5929962f75f52d2f4fbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6926cf539cca1f818f391aa52eeb44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8943b0c1af0a13745e715989902468.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/7f9e8449aad35c5d840a3395ea86df6d.png)
我们称上述模型为“三点共线模型”,运用这个模型可以巧妙地解决一些最值问题.
任务:
(1)上面小论文中的知识拓展部分.主要运用的数学思想有 ;(填选项)
A.方程思想 B.统计思想 C.分类讨论 D.函数思想
(2)已知线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04677de22b01b81ddc25b91a2cb449e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a3a3d168a18401e47576f70a692e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe3a78950f6a4bb479c7ec0d8e57b5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72026e70f45cea6a7c49881592e73a02.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5992036c739557714bc05e08a93bdd3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc6f90f41388dff525161c86e01f3ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe3a78950f6a4bb479c7ec0d8e57b5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72026e70f45cea6a7c49881592e73a02.png)
(4)如图4,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3e9818b013c0d75b09926cf4c6e846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.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/37a0397c811fe80c80ecd5b871201987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075bc6df108c9c2b3b5ac46bca7c8d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075bc6df108c9c2b3b5ac46bca7c8d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a0397c811fe80c80ecd5b871201987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7fa3aea72ccc36948a4a90f7368f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b5e86e15058757b1eb106d1e9faa50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,在平面直角坐标系中,点
,点
,点
关于
轴的对称点为
.
的坐标为 ;
(2)已知一次函数的图象经过点
与
,求这个一次函数的解析式;
(3)点
是
轴上的一个动点,当
时,
的周长最小;
(4)点
,
是
轴上的两个动点,当
时,
的周长最小;
(5)点
,点
分别是
轴和
轴上的动点,当四边形
的周长最小时,
,此时四边形
的面积为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d521c9bf37ce287bc559b016d79e1101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42e598dd62bf7f73beceeedecc66d74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
(2)已知一次函数的图象经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f4f68b5c1be8c6b654641d442da766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
(4)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d18f30e925a43992aae5105d82dc189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b9abd10af70f883db1a6c964891e53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea51de5ca1c2879e7a767a60ce4624cd.png)
(5)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b476509d73c4a0091277b6fd5605aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b175cf1b61261a2943c3ddd947abb22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1745af4a067f02631548df42a7ca844a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1745af4a067f02631548df42a7ca844a.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐3】(1)问题提出:如图①,在矩形
中,
,
,
是
上一动点,则
的最小值为_________
(2)问题探究:如图②,在正方形
中,
,点
是平面上一点,且
,连接
,在
上方作正方形
,求
的最大值.
(3)问题解决:为迎接2021年9月在西安举办的第14届全运会,打造体育历史文化名城,某小区对一正方形区域
进行设计改造,方使大家锻炼运动.如图③,在正方形内设计等腰直角
为健身运动区域,直角顶点E设计在草坪区域扇形
的弧
上.设计铺设
和
这两条不同造价鹅卵石路,已知
米,
米,
,
,若铺设
路段造价为每米200元,铺设
路段的造价为每米100元,请求出铺设
和
两条路段的总费用的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3318260948820af44fcfb598da6fb73d.png)
(2)问题探究:如图②,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348fb71fbc47fd87e9ce011652ef4186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/922b1e3f3948b044ff8f53af2aa1f038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
(3)问题解决:为迎接2021年9月在西安举办的第14届全运会,打造体育历史文化名城,某小区对一正方形区域
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/babea91663e479b0018ebac5e36374d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd4997da49b3dfe98144ad13aed0d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7612afc3724b3cf381556994bc1821f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33f381b03270154695d6b5421b1e739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0d6068866683547b733dbe005031a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/21/3635a6bd-bfab-4f1e-830c-e27d32c18771.png?resizew=582)
您最近一年使用:0次