如图所示,抛物线y=x2+bx+c经过点A(2,﹣3)与C(0,﹣3),与x轴负半轴的交点为B.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/e2e0bdc2-6271-40e2-9041-771a86042c55.jpg?resizew=165)
(1)求抛物线的解析式与点B坐标;
(2)若点D在x轴上,使△ABD是等腰三角形,求所有满足条件的点D的坐标;
(3)点M在抛物线上,点N在抛物线的对称轴上,若以A、B、M、N为顶点的四边形是平行四边形,其中AB∥MN,请直接写出所有满足条件的点M的坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/e2e0bdc2-6271-40e2-9041-771a86042c55.jpg?resizew=165)
(1)求抛物线的解析式与点B坐标;
(2)若点D在x轴上,使△ABD是等腰三角形,求所有满足条件的点D的坐标;
(3)点M在抛物线上,点N在抛物线的对称轴上,若以A、B、M、N为顶点的四边形是平行四边形,其中AB∥MN,请直接写出所有满足条件的点M的坐标.
更新时间:2020-01-21 16:10:10
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相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】如图,对称轴为直线
的抛物线经过
、
两点,与
轴的另一个交点为
,点
在
轴上,且
.
(1)求该抛物线的表达式;
(2)设该抛物线上的一个动点
的横坐标为
.
①当
时,求四边形
的面积
与
的函数关系式,并求出
的最大值;
②点
在直线
上,若以
为边,点
、
、
、
为顶点的四边形是平行四边形,请求出所有符合条件的点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62855ff21228ecea8e28fd0fbeb814ee.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e09ccf116333d550129771dd027246.png)
(1)求该抛物线的表达式;
(2)设该抛物线上的一个动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f56ba04145de9f760f274f5af8351eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d8cad5b34e3269db5f683329111bc4.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/cf231f8f86fb922df4ca0c87f044cec3.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/24/e9b6a2de-aa14-42c5-adae-a8c6ececcae8.png?resizew=411)
您最近一年使用:0次
【推荐2】如图,在矩形
中,点
. 沿直线
折叠矩形
,使点
落在
边上,与点
重合.分别以
,
所在的直线为
轴,
轴建立平面直角坐标系,抛物线
经过
两点.
(1)求
及点
的坐标;
(2)一动点
从点
出发,沿
以每秒
个单位长的速度向点
运动, 同时动点
从点
出发,沿
以每秒
个单位长的速度向点
运动, 当点
运动到点
时,两点同时停止运动.设运动时间为
秒,当
为何值时,以
,
,
为顶点的三角形与
相似?
(3)点
在抛物线对称轴上,点
在抛物线上,是否存在这样的点
与点 N,使以
,
,
,
为顶点的四边形是平行四边形?若存在,请直接写出点
与点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6fb472793e4bfb7d74a2030607a1133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.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/53be61cd85ec86aabd164cae0265246b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d240ea67c239b0d9213448c11cba18c2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)一动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/36a1b09c653185842513e24ebba60bb3.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
(3)点
![](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/ac047e91852b91af639feec23a9598b2.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/19/c2cb9693-0162-4811-b0f8-57e7e420ccd1.png?resizew=143)
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解答题-问答题
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较难
(0.4)
【推荐3】如图(图1),已知抛物线y=ax2+bx+c(a≠0)的图象与x轴相交于A(﹣1,0),B(4,0)两点,与y轴交于C(0,3)点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/7f83d87c-89b7-4b5c-86d7-130cbe6c4d1a.png?resizew=341)
(1)求抛物线的解析式;
(2)若点P是抛物线的对称轴上的一个动点,则是否存在一点P,使
PAC的周长最小.若存在,请求出P的坐标;若不存在,试说明理由;
(3)如图(图2),若M是抛物线第一象限部分上的一个动点,过点M作y轴的平行线,交直线BC于点N,作MD⊥BC于点D,设
DMN的周长为L,点M的横坐标为m,求L与m的函数关系式,并求出L的最大值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/7f83d87c-89b7-4b5c-86d7-130cbe6c4d1a.png?resizew=341)
(1)求抛物线的解析式;
(2)若点P是抛物线的对称轴上的一个动点,则是否存在一点P,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(3)如图(图2),若M是抛物线第一象限部分上的一个动点,过点M作y轴的平行线,交直线BC于点N,作MD⊥BC于点D,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
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解答题-问答题
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较难
(0.4)
【推荐1】如图,在平面直角坐标系中,点
是坐标原点,抛物线
与
轴交于
、
两点,与
轴交于点
,连接
,
.
(1)求抛物线的解析式;
(2)点
是第一象限内抛物线上一点,连接
、
,设点
的横坐标为
,
的面积为
,求
与
之间的函数关系式,并直接写出自变量
的取值范围;
(3)在
的条件,连接
,过点
作
于点
,交
轴于点
,过
作
轴交
轴于点
,点
是
的中点,连接
交
于点
,连接
,过点
作
的平行线交
轴负半轴于点
,连接
交
轴于点
,若
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c701ad244b3f6aef31eb298bd3cac690.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/583e6b79cfda8dcea33d19e5b8ee7599.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/8/95e50f57-d98d-4d33-b1c9-92273b6904da.png?resizew=544)
(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/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](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/147de24f071e316b68fd2e78e3c84545.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)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af3c38ae02d2252c98a3f648c409d286.png)
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c782675efb07943bcee0339945a08711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc29330979e64e99678423e58759779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2c692dc9b7796dceea36627cb8b059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afdc73d06d03323c8095eaa1fb33e072.png)
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解答题-作图题
|
较难
(0.4)
【推荐2】如图①,若直线l︰y=-2x+4交x轴于点A、交y轴于点B,将△AOB绕点O逆时针旋转
得到△COD.过点A,B,D的抛物线h︰y=ax2+bx+4.
(1)求抛物线h的表达式;
(2)若与y轴平行的直线m以1秒钟一个单位长的速度从y轴向左平移,交线段CD于点M、交抛物线h于点N,求线段MN的最大值;
(3)如图②,点E为抛物线h的顶点,点P是抛物线h在第二象限的上一动点(不与点D、B重合),连接PE,以PE为边作图示一侧的正方形PEFG.随着点P的运动,正方形的大小、位置也随之改变,当顶点F或G恰好落在y轴上时,直接写出对应的点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
(1)求抛物线h的表达式;
(2)若与y轴平行的直线m以1秒钟一个单位长的速度从y轴向左平移,交线段CD于点M、交抛物线h于点N,求线段MN的最大值;
(3)如图②,点E为抛物线h的顶点,点P是抛物线h在第二象限的上一动点(不与点D、B重合),连接PE,以PE为边作图示一侧的正方形PEFG.随着点P的运动,正方形的大小、位置也随之改变,当顶点F或G恰好落在y轴上时,直接写出对应的点P的坐标.
![](https://img.xkw.com/dksih/QBM/2019/12/2/2346461582401536/2347287357767680/STEM/1025c689c66e4a2cba18efd04aba936a.png?resizew=463)
您最近一年使用:0次