如图①,在
中,
,
,
,
,动点
从点
出发,沿射线
以每秒
个单位长度的速度运动,过点
作
的垂线交
于点
,以
为边向上作矩形
,点M在AB或AB的延长线上,
,当点
与点
重合时点
停止运动,设点
运动的时间为
(秒).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/26779371-0824-4d5a-bb78-32d588dff0b8.png?resizew=198)
(1)求
的长;
(2)当
平分矩形
的周长时,求
的值;
(3)当点
在
的直角边的垂直平分线上时,直接写出
的值;
(4)如图②,当点
在
的延长线上时,
、
分别交边
于点
、
,当
与图中某个三角形全等时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875cd2860fb57cedf932aa0535d2e1da.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/26779371-0824-4d5a-bb78-32d588dff0b8.png?resizew=198)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(4)如图②,当点
![](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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/568b213746dab0872fd9ea3cb883e898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
2023·吉林长春·一模 查看更多[2]
更新时间:2023-04-01 11:24:19
|
相似题推荐
解答题-证明题
|
困难
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名校
【推荐1】如图,已知直线
经过点
,交x轴于点A,y轴于点B,F为线段AB的中点,动点C从原点出发,以每秒1个位长度的速度沿y轴正方向运动,连接FC,过点F作直线FC的垂线交x轴于点D,设点C的运动时间为t秒.
当
时,求证:
;
连接CD,若
的面积为S,求出S与t的函数关系式;
在运动过程中,直线CF交x轴的负半轴于点G,
是否为定值?若是,请求出这个定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c994c4efd4ee6f11ca23a309764eb419.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a49e8b6efab71f87117d432ec839f7.png)
![](https://img.xkw.com/dksih/QBM/2019/12/26/2363639974068224/2363724461924352/STEM/a3263d4401c54a7c8719980ebf1e39f0.png?resizew=528)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc5b9dcaad80aac0466c3f2fc9cf4ba4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e822509fd646b2c3fcbc372d0f086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd6a84786c885331f4009b56ed76db6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bcec5b5cf5364eb8889204d2991a002.png)
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【推荐2】如图1,在平面直角坐标系中Rt△AOB≌Rt△DCA,其中B(0,4),C(2,0).连接BD.
![](https://img.xkw.com/dksih/QBM/2020/3/24/2429100475236352/2436974022270976/STEM/691f493b44c742d2b4c5d4d42a30fd02.png?resizew=438)
(1)求直线BD的解析式;
(2)点E是直线AD上一点,连接BE,以BE,ED为一组邻边作▱BEDF,当▱BEDF的面积为3时,求点E的坐标;
(3)如图2,将△DAC沿x轴向左平移,平移距离大于0,记平移后的△DAC为△D′A′C′,连接D′A,D′B,当△D′AB为等腰三角形时,直接写出点D′的坐标.
![](https://img.xkw.com/dksih/QBM/2020/3/24/2429100475236352/2436974022270976/STEM/691f493b44c742d2b4c5d4d42a30fd02.png?resizew=438)
(1)求直线BD的解析式;
(2)点E是直线AD上一点,连接BE,以BE,ED为一组邻边作▱BEDF,当▱BEDF的面积为3时,求点E的坐标;
(3)如图2,将△DAC沿x轴向左平移,平移距离大于0,记平移后的△DAC为△D′A′C′,连接D′A,D′B,当△D′AB为等腰三角形时,直接写出点D′的坐标.
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解答题-证明题
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困难
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【推荐1】如图,在
中,
,
于点D,
,
分别交
、
于E、F.
(1)如图1,
,
,求
的长度;
(2)如图2,取
中点G,若
,求证:
;
(3)如图3,在(2)的条件下,过点D作
于点N,并延长
交
延长线于点M,请直接写出
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e78ee2cb6caf7d7ee877796d18e53907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/1aefe003-2d36-420b-b206-c7d00ceb0fc7.png?resizew=491)
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(2)如图2,取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ad4575947ba06dfefaabab1ac161fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4474c82ae786e175b5e603b81bc8018d.png)
(3)如图3,在(2)的条件下,过点D作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f22a601861b2d7c266c307e4ae05784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0a8cfb3747c454e0698e12857ffae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf38d5288cbde3baf715bd0ca6c4dadb.png)
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解答题-证明题
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(0.15)
【推荐2】如图1,在矩形ABCD中,P是BC上的点,ΔABP沿AP折叠B点的对应点是M点,延长PM交直线AD于点E.
![](https://img.xkw.com/dksih/QBM/2022/4/28/2968152255193088/2969219297894400/STEM/bbcec96f-ce4f-4a7e-9bed-ea08a05c1107.png?resizew=441)
(1)求证:EA=EP
(2)如图2,Q是AD上的点,QD=BP;ΔCDQ沿CQ折叠D点的对应点是N点,且P、M、N、Q在同一直线上.
①若AB=4,AD=8;求BP的长.
②若M、N互相重合;求
的值;(自己画草图)
(3)如图3,Q是AD上的点,QD=BP;ΔCDQ沿CQ折叠D点的对应点是N点,若AB=4,MN的最小值是1;求AD的长.
![](https://img.xkw.com/dksih/QBM/2022/4/28/2968152255193088/2969219297894400/STEM/bbcec96f-ce4f-4a7e-9bed-ea08a05c1107.png?resizew=441)
(1)求证:EA=EP
(2)如图2,Q是AD上的点,QD=BP;ΔCDQ沿CQ折叠D点的对应点是N点,且P、M、N、Q在同一直线上.
①若AB=4,AD=8;求BP的长.
②若M、N互相重合;求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0636e0c3ae734c1ac05ef4d53b1f2a92.png)
(3)如图3,Q是AD上的点,QD=BP;ΔCDQ沿CQ折叠D点的对应点是N点,若AB=4,MN的最小值是1;求AD的长.
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【推荐1】定义:若三角形的一条边上的高线与这条边相等,则称这个三角形为“标准三角形”.如:在
,
于点
,
,则
为标准三角形.
(1)【概念感知】判断:对的打“√”,错的打“×”.
①等腰直角三角形是标准三角形.( )
②顶角为
的等腰三角形是标准三角形.( )
(2)【概念理解】若一个等腰三角形为标准三角形,则此三角形的三边长之比为______.
(3)【概念应用】如图,若
为标准三角形,
于点
,
,求
的最小值.
(4)若一个标准三角形的其中一边是另一边的
倍,求最小角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/1cc76548-462c-427b-a825-a3f06401685c.png?resizew=135)
(1)【概念感知】判断:对的打“√”,错的打“×”.
①等腰直角三角形是标准三角形.( )
②顶角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
(2)【概念理解】若一个等腰三角形为标准三角形,则此三角形的三边长之比为______.
(3)【概念应用】如图,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def26b3c1c08356f8fa49c85fe19476b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4320c8fa4685518669b4a3617ded2b.png)
(4)若一个标准三角形的其中一边是另一边的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
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解答题-证明题
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名校
【推荐2】已知:
是
的直径,
是
的弦,
于
,点
在弧
上,连接
.
(1)如图1,求证:
平分
;
(2)如图2,若
,求证:
;
(3)如图3,在(2)的条件下,点
在弧
上,连接
、
,
与
交于点
,
,
,
,求线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6740f1aa7d0189c73bf7272a2397abb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/900bb6e2-6c92-44b5-b4ec-be738c29baa0.png?resizew=576)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a71e8a816d9ef65d4bffd81fd53216.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca14fa885a9d04f04e0418b49b118241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0105d0889f6fa9cb5430cf9e09337173.png)
(3)如图3,在(2)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d68dba9ac42781db59c1ae68105ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc06156c0ce8fd0da3c6496d1192efa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/687a15c48bd51301462277650ccf032e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1bd75fbe8bec72e27a3b3b6d48f138.png)
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【推荐3】【理解概念】
定义:有三个角相等的四边形叫做三等角四边形.
(1)下列四边形是三等角四边形的是_________.(填序号)
①平行四边形;②菱形;③矩形;④正方形.
【巩固新知】
(2)如图 ,折叠平行四边形 DEBF,使得顶点 E、F 分别落在边 BE、BF上的点 A、C 处,折痕为DG、DH.
求证:四边形 ABCD 为三等角四边形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/fc17aab1-910d-4789-a0b0-042e7fe9984a.png?resizew=218)
【拓展提高】
(3)如图 ,在三等角四边形 ABCD 中,∠A=∠B=∠C,若 AB=5,
,DC=7,则BC的长度为_________.
定义:有三个角相等的四边形叫做三等角四边形.
(1)下列四边形是三等角四边形的是_________.(填序号)
①平行四边形;②菱形;③矩形;④正方形.
【巩固新知】
(2)如图 ,折叠平行四边形 DEBF,使得顶点 E、F 分别落在边 BE、BF上的点 A、C 处,折痕为DG、DH.
求证:四边形 ABCD 为三等角四边形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/fc17aab1-910d-4789-a0b0-042e7fe9984a.png?resizew=218)
【拓展提高】
(3)如图 ,在三等角四边形 ABCD 中,∠A=∠B=∠C,若 AB=5,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa6c7bd8ddd65bd637db19de5710527.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/aca6fdc0-f4c5-4ba6-8ed1-afa50a0a6014.png?resizew=164)
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困难
(0.15)
名校
解题方法
【推荐1】定义:若抛物线
的图象恒过定点
,则称
为抛物线L的“不动点”.已知:若抛物线
.
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807375131394048/2810110496743424/STEM/8a07e40f-64ea-4fef-b421-1f87956ce3ff.png?resizew=488)
(1)求抛物线L的不动点坐标;
(2)如图1,已知平面直角坐标系中
、
、
,以点B为圆心,
为半径作⊙B,点P为⊙B上一点,将点C绕点P逆时针旋转
得到点
,当点P在⊙B上运动时,求线段
长度的最大值;
(3)在(2)的条件下,若抛物线L的对称轴是直线
﹔
①求抛物线L的解析式;
②如图2,若直线
交抛物线L于点
、
,交y轴于点Q,平面内一点H坐标为
,记
,当点P在⊙B上运动时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04be2c79a792c5f15de83506382d192.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97a04470f8bccdb4d9bbd2183483654.png)
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807375131394048/2810110496743424/STEM/8a07e40f-64ea-4fef-b421-1f87956ce3ff.png?resizew=488)
(1)求抛物线L的不动点坐标;
(2)如图1,已知平面直角坐标系中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df49179dbfbc8e207aa92fd72060fba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e210795a966bd5dc1293479ab1988b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c962456e190ea0d7e6e88782aa8c161.png)
(3)在(2)的条件下,若抛物线L的对称轴是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
①求抛物线L的解析式;
②如图2,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10272575c1b8fec81667d0b7e7bcbc29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb048a4111d50f4a62b22653069dd357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd62e19366dd07b64ee2d40538657b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb2918407de39f7e4e67b8b2c99b8ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7593ec5c2a70a9e9692f09f81023f8.png)
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【推荐2】【阅读理解】对于平面直角坐标系
中的图形
,
,给出如下定义:
为图形
上任意一点,
为图形
上任意一点,如果
,
两点间的距离有最小值,那么称这个最小值为图形
,
间的“闭距离”,记作
.
【迁移应用】如图,在平面直角坐标系中,直线
的图象与坐标轴交于
,
两点,点
的坐标为
,抛物线
:
的图象经过
,
,
三点.
的表达式;
(2)点
为第一象限抛物线上的一点,连接
交
于点
,连接
,记
的面积为
,
的面积为
,若
,求
(点
,
)的值;
(3)已知坐标系中有一直线
:
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/dad2a36927223bd70f426ba06aea4b45.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d7224242ab75080dfb394a39ebf7f8.png)
【迁移应用】如图,在平面直角坐标系中,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9118cc77fc0a045337745890e50cad.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/bd243fab0af865af67a2ab817e909cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.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/895dc3dc3a6606ff487a4c4863e18509.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2281cb6df0c3c518ce5ed19a02b57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd0c32d9f3badb7e51233dd39a39fbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024de2e552d05bd15b8132936d60cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)已知坐标系中有一直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682dcc172381f8d3f36e5c0c24e140be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8412470bb8e0ea36e401d397836e752b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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