在平面直角坐标系
中,对于点
,点
,定义
与
中的值较大的为点
的“绝对距离”,记为
.特别地,当
时,规定
,将平面内的一些点分为I,Ⅱ两类,每类至少包含两个点,记第I类中任意两点的绝对距离的最大值为
,第Ⅱ类中任意两点的绝对距离的最大值为
,称
与
的较大值为分类系数.如图,点
,
,
,
,
的横、纵坐标都是整数.
分为第I类,点
,
,
分为第Ⅱ类,则
________,
________,因此,这种分类方式的分类系数为________;
(2)将点
,
,
,
,
分为两类,求分类系数
的最小值:
(3)点
的坐标为
,已知将6个点
,
,
,
,
,
分为两类的分类系数的最小值是5,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0761e63cb3a4113d50f6bf808cdc031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bcb4828b16c8e845492f1a53ddd9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d6e0041686009f23870639b7cd4aba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a1a35fb8112b8b0661c9e5281839dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8fab6162c4bd53f96157b9fb9a3594.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc799906f292d4f64a4eae7342df82b.png)
(2)将点
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fda6aa05353cac95ce52d97f491ee0a.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2022-07-07 16:47:31
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】【阅读理解】在平面直角坐标系
中,对于任意两点
,
,
,
,我们将
称为点
与点
的“直角距离”,记作
.
例如:点
与点
的“直角距离”
.
【问题解决】
(1)已知点
坐标为
.
①点
与点
的“直角距离”
;
②若点
与点
的“直角距离”
,则
的值为 .
(2)已知
和
.
①在点
,
,
中,到
,
两个点的“直角距离”之和相等的两个点是 ;
②若点
到
,
两个点的“直角距离”之和为6,则
,
的取值范围分别是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e743e9dd8d3666f934faf6771dcdce31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a350eb41c3b7e4face9c3299eff9d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222073dfd723d8f6602a7c1455d338b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24529eadaef974ec0625f8ca40682e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494f61d8d0bc32fd51ad7b26da62dcb8.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/1ecd750c71427b090cb2c700611adac6.png)
例如:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2857f75cfb98c78e0d96dfd4d7d0240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb94feb21940ac8ec3fa0ee8daac034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54aa3ac7eae2a8302d379f1e6440258c.png)
【问题解决】
(1)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38f266df4834d1e546d66547b80220.png)
①点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6868a51ea0a78f2605d3d1cbe701351b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e575df8da4607dfc271c30a98c0730.png)
②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e95f3e91d67f61820385231b6025b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386c0edb7849750cdadb70970be53392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3c4efe7471c04ffefb723dc01b1655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f4f980d0129368dc720886636e1f1b.png)
①在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb95959fb22c74e9ba08ab2eea44205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c608bc19b43c9def034f44cf5dd966d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da77acb6d916840f572717ddfec88d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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名校
解题方法
【推荐3】在平面直角坐标系中,定义:
为 d,
,
两点之间的“曼哈顿距离”,并称点 P 与点 Q 是“d 关联”的.例如:若点 M 的坐标为(−1,2),点 N 的坐标为(1,3),则点 M 与点 N 之间的“曼哈顿距离”为
,且点 M 与点 N是“3关联”的.
(1)在
,
,
,
这四个点中, 与原点 O 是“2 关联”的点是 _______;(填字母)
(2)已知点
,
,过点 B 作平行于 x 轴的直线 l.
① 当t=− 1时,直线 l 上与点 A 是“2 关联”的点的坐标为_______;
② 若直线 l 上总存在一点与点A 是“2 关联”的, 求 t 的取值范围(请写出求解过程).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7fbe47446c11d60249ab98a5a4b186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84bd36d19352628cb54c214436ee3322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27bd43bc4af1e3b28d0de0cc561b879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17416988d0645e57d1415a4201486f7b.png)
(1)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ac8fa800c00933279f2b20e5034438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c352223a2c62779dd71b5e2846e60991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f768ec9a3a36cab9c488149507fd199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603d200f4899ca294c286150d8fd222a.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4212e0f2da912518e8b02a741cc91ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b33b40e23536266e272a89e5153afe.png)
① 当t=− 1时,直线 l 上与点 A 是“2 关联”的点的坐标为_______;
② 若直线 l 上总存在一点与点A 是“2 关联”的, 求 t 的取值范围(请写出求解过程).
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解答题-证明题
|
较难
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【推荐1】如图,在平面直角坐标系中,
,点B是y轴正半轴上一动点,点C、D在x正半轴上.
![](https://img.xkw.com/dksih/QBM/2020/11/17/2595078276079616/2595763001720832/STEM/be975f2ab3544a3aadb29d4309381599.png?resizew=366)
(1)如图1,若
,
,BD、CE是△ABC的两条角平分线,且BD、CE交于点F,连接AF,求证:△AFD为等腰三角形;
(2)如图2,△ABD是等边三角形,以线段BC为边在第一象限内作等边△BCQ,连接QD并延长,交y轴于点P,当点C运动到什么位置时,满足
?请求出点C的坐标;
(3)如图3,以AB为边在AB的下方作等边△ABP,点B在y轴上运动时,求OP的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a18a7caa080988802ba1145b4fe4203.png)
![](https://img.xkw.com/dksih/QBM/2020/11/17/2595078276079616/2595763001720832/STEM/be975f2ab3544a3aadb29d4309381599.png?resizew=366)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ed7c5e4c21712fd521e31f894ee66e.png)
(2)如图2,△ABD是等边三角形,以线段BC为边在第一象限内作等边△BCQ,连接QD并延长,交y轴于点P,当点C运动到什么位置时,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf6c72a2072834d20430d4bd3f574607.png)
(3)如图3,以AB为边在AB的下方作等边△ABP,点B在y轴上运动时,求OP的最小值.
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名校
【推荐2】如图1,
点为
轴正半轴上一点,
交
轴于
两点,交
轴于
两点,
点为劣弧
上一个动点,且
.
,取
中点
,连结
,则
的最大值为________;
(2)如图2,连接
.若
平分
交
于
点,求
的长;
(3)如图3,连接
,当
点运动时(不与
两点重合),求证:
为定值,并求出这个定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5ab74296abcbcf994c02b5834cd699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b50cd46b11494005707a8b4c386b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a8eb448e6f9e7704694f3593645966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d221944148d71e2e1bc76040aefb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
(3)如图3,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc6b04dcd5a34b8125696faf552ab63f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b93dbe5272a5167ff4e2918bec864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf8c7485b305ac3be306d78c9d3156e.png)
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