如图,抛物线
与
轴交于
,
两点(点
在点
的左侧),与
轴交于点
,
.
(1)求抛物线的解析式;
(2)点
为第四象限抛物线上一点,当
值最大时,求点
的坐标;
(3)在抛物线得对称轴上找一点
,使得
的差最大,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf11d89ebdbd39d535c9de1ef6e515dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541748f10d7ed5f755f456536dbc829.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/4/c2b23977-b4b7-4070-8a6d-1909512e1890.png?resizew=148)
(1)求抛物线的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0cbf0604c1a9bdb08cc54fa6821fa06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)在抛物线得对称轴上找一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f810d7103834731fae6e9af24aca263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
更新时间:2023-08-03 22:45:44
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】在平面直角坐标系
中,二次函数
的图象与x轴交于A、B两点(点A在点B的左侧),与y轴正半轴交于点C,直线
交于第一象限内的D点,且
的面积为
.
(2)点E为x轴上一点,过点E作y轴的平行线交线段
于点F,交抛物线于点G,当
时,求点G的坐标;
(3)已知点
是x轴上的点,若点P关于直线
的对称点Q恰好落在二次函数的图象上,求n的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ba9c0856b08efe0f05a41a19031057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d585d2d6643471640905d234d9538c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
(2)点E为x轴上一点,过点E作y轴的平行线交线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70457a35494492eaf982c9b0d4ded9af.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4165a67e17d76c0323c0bc6b58d1fa5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
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【推荐2】抛物线
与x轴交于点
,与y轴交于点C.
(1)
(2)求抛物线的解析式
(3)在抛物线对称轴上找一点M,使
的周长最小,并求出点M的坐标和
的周长
(4)若点P是x轴上的一个动点,过点P作
交抛物线于点Q,在抛物线上是否存在点Q,使B、C、P、Q为顶点的四边形为平行四边形?若存在请求出点Q的坐标,若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d44326c214c7a5ecc3068a29ec96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf49c761760a084725ce8fee4a670373.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/5698dc56-1c31-4a3e-80d9-84380fbb98de.png?resizew=176)
(1)
(2)求抛物线的解析式
(3)在抛物线对称轴上找一点M,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad3e2b2689dfe97ec82d473ab6cf469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad3e2b2689dfe97ec82d473ab6cf469.png)
(4)若点P是x轴上的一个动点,过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7b5caf93535240f8e073fd0a2bcff2.png)
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【推荐1】如图,直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71187e41a7278c6f1893852944bb782.png)
与
轴、
轴分别交于点A、
,直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d4b99f920ce922c4709077a6662446.png)
与
轴、
轴分别交于点
、
,点
在直线
上.
(1)直线
过定点
吗? (填“过”或“不过”).
(2)若点B、O关于点D对称,求此时直线
的解析式;
(3)若直线
将
的面积分为
两部分,请求出m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71187e41a7278c6f1893852944bb782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1882d2f789de61b5b7e3ec952e13b99e.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d4b99f920ce922c4709077a6662446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/009973efefd55fe37f3b1170f4d14ff7.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5a7750bdcf8a1592ed82feae21d2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/26/ff40b99c-f7e2-4d3a-8cfe-71c34f28fd29.png?resizew=337)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef470d0f61b249c621d190770d45fa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b83a835c3401602a384a0a6834f128.png)
(2)若点B、O关于点D对称,求此时直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9c934d84feba963335cc7edf01610e.png)
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【推荐2】如图,在平面直角坐标系中,正方形
的顶点
为
,顶点
为
.
(1)直接写出直线
的解析式:____________;
(2)点
与点
关于
轴对称,点
为正方形边上一点,且
,直接写出点
的坐标:____________;
(3)将正方形沿
轴向下平移
个单位,直至点
落在
轴上.设正方形在
轴下方的部分面积为
,求
关于
的函数关系式,并写出相应自变量
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0573e2af8a0dc8c6a1c0af067a324f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b46a4c1c8cbd47e1e906f60151c2eeb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/18911e48-362c-4cc9-bb39-17edf9ef892d.png?resizew=474)
(1)直接写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491deb24e1f33b89a39b7c9d6b03a123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(3)将正方形沿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ebd1d359040a1172a944ded96ed0127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
【推荐3】在平面直角坐标系
中,对于线段
,直线l和图形W给出如下定义:线段
关于直线l的对称线段为
(
分别是M,N的对应点).若
与
均与图形W(包括内部和边界)有公共点,则称线段
为图形W关于直线l的“对称连接线段”.
的横、纵坐标都是整数.在线段
中,是
关于直线
的“对称连接线段”的是 .
(2)如图2,已知点
,以O为中心的正方形
的边长为4,各边与坐标轴平行,若线段
是正方形
关于直线
的“对称连接线段”,求k的取值范围.
(3)已知
的半径为r,点
,线段
的长度为1.若对于任意过点Q
的直线l,都存在线段
是
关于l的“对称连接线段”,直接写出r的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f9b255a8da2b914a84a848e0ec499d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a47c6b21d8a02d0f3d3feed0d004e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15280626e9bb04d0245ffc2cd0bc2f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db3e8c9548bb5cd82342981296ad27b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
(2)如图2,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a04c9762911ad464820feb0b052d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ebce8b2a915356ed39f36c5bad2ebe.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5e74ff51ffbe5180ce31b21c750a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37c6cb3fb803d099517c34a87515bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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【推荐1】如图1,抛物线
与x轴交于点A和点B,与y轴交于点C.点P是抛物线上一点,且在直线
的上方.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/db3c571b-bcef-4497-ab0b-c56463eb59b3.png?resizew=580)
(1)直接写出点A的坐标为 ,点B的坐标为 ;
(2)当点P的坐标为
时,求四边形
的面积;
(3)如图2,
交
于点D.
交
于点E,记
的面积分别为
,判断
是否存在最大值.若存在,求出最大值;若不存在,请说明理由.
(4)如图3,点C在线段
上,满足
,
,直线
过点M,直线
过点N,且
,求直线
与
之间的最大距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3236d825b994ee9c28e5d5479a57b8ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/db3c571b-bcef-4497-ab0b-c56463eb59b3.png?resizew=580)
(1)直接写出点A的坐标为 ,点B的坐标为 ;
(2)当点P的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69abe959988e4c8c0739f5857ccfb0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b20a13f2d8d5b4ea72cd889dc307d3.png)
(3)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d60f55c585f1b455027202684b13e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc0d09869265bfddb561ba21f79d4cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf4e20ea341827ce5f9552daee39462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2a89833c363fe06a5ae1524fa65144.png)
(4)如图3,点C在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cb59543ccf42b37ebce3f67416e561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1defd7bd31b50762679d1439aa9b67cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4482c4a3bd4864b8fba93da916558920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
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【推荐2】如图,在平面直角坐标系中,已知矩形
的三个顶点
、
、
.以
为顶点的抛物线
过点
.动点
从点
出发,以每秒
个单位的速度沿线段
向点
运动,运动时间为
秒.过点
作
轴交抛物线于点
,交
于点
.
![](https://img.xkw.com/dksih/QBM/2018/10/4/2046579926351872/2056322189254656/STEM/06808ea2c1bc46e09e6ce34359387701.png?resizew=117)
直接写出点
的坐标,并求出抛物线的解析式;
当
为何值时,
的面积最大?最大值为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f907c6301c4fd53217f455dc72e2c669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958c9bface1ae9c373282a2b310b1153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477e65c88bfd1bb9ca78ff0e4a50b56d.png)
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