如图1,在平面直角坐标系
中,抛物线与x轴交于点
,
,与y轴交于点
,点D为抛物线的顶点.
(2)如图2,已知经过点A的直线
与抛物线在第一象限交于点E,与y轴交于点F,连接
.当
时,求点E的坐标;
(3)如图3,在(2)的条件下,将直线
与y轴的交点F向下平移
个单位长度得到点P.
①连接
,求
的度数;
②将
绕点O逆时针旋转一定的角度
得到
,直线
与x轴交于点M.设点N为平面直角坐标系内的任意一点,问在旋转过程中是否存在某个位置,使得四边形
为菱形?若存在,请直接写出所有满足条件的点N的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36488f7dff759ace2a27e56c3857056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd81cac5d2bcf0753819951088027d1.png)
(2)如图2,已知经过点A的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81c66a0f1b68d857c6dbeff848d64fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2081f646f96cef74a619ab8250afe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cfe9ad5b11ab8230f18566ebc5f6028.png)
(3)如图3,在(2)的条件下,将直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe69c072c68d0decf9b46eb7cd154d0.png)
①连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cebb7016268e2a6e7f6d90d5ca5d7585.png)
②将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3877c5dd48bc7311f79a38de74a6cab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/335c1d4db7d83b1271c2d6ff87a24b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3f30df20c07ea72dd9fd4adbc2633e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de2a174dbe7bb8c61f444d52e2a0620e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e433d465b799e2484fac517b53cf99a3.png)
更新时间:2024-04-10 18:47:00
|
相似题推荐
解答题-问答题
|
困难
(0.15)
【推荐1】如图①,在平面直角坐标系中,抛物线P:
的图象与x轴交于点A,B,与y轴交于点C,且图象与抛物线Q:
的图象关于原点中心对称.
(1)求抛物线P的表达式;
(2)连接BC,点D为线段BC上的一个动点,过点D作
轴,交抛物线P的图象于点E,求线段DE长度的最大值;
(3)如图②,在抛物线P的对称轴上是否存在点M,使
是等腰三角形?若存在,求出所有符合条件的点M的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0781a9acdedd45dbdf6855f91ead86.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/30/fbce3e90-9046-47d8-9bef-429df8323530.png?resizew=312)
(1)求抛物线P的表达式;
(2)连接BC,点D为线段BC上的一个动点,过点D作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d2522a6e2f5f434d684cfedea6690e1.png)
(3)如图②,在抛物线P的对称轴上是否存在点M,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bdfe807af9e6573270b2e10cca230eb.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
真题
【推荐2】如图1,抛物线
交x轴于O,
两点,顶点为
.点C为
的中点.
的表达式;
(2)过点C作
,垂足为H,交抛物线于点E.求线段
的长.
(3)点D为线段
上一动点(O点除外),在
右侧作平行四边形
.
①如图2,当点F落在抛物线上时,求点F的坐标;
②如图3,连接
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcff1114aa1a7d118ccbeec937a55c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0d256036d52b784b8c68bfc8db69d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7272800367fac5ade01f94e7a5c3ef5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eaf9ba52ee4a71dba4db49503e864d3.png)
(2)过点C作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b95a5251406bd8cddf4e6a3402282d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(3)点D为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d000a9d441370a43debf5845f5f41142.png)
①如图2,当点F落在抛物线上时,求点F的坐标;
②如图3,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64150582c67a93f02edc6b751712f8a.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
【推荐1】如图,在平面直角坐标系中,点
为坐标原点,抛物线
与
轴的负半轴交于点A,与
的正半轴交于点
,与
轴正半轴交于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/9b5d627d-2a46-4ad1-8b9a-5097a7b4ed3e.png?resizew=314)
(1)求抛物线的解析式;
(2)点
是第四象限内抛物线上一点,连接
交
轴于点
,过
作
轴交抛物线于点
,连接
,设四边形
的面积为
,点
的横坐标的
,求
与
的函数解析式;
(3)在(2)的条件下,过
作
∥y轴交
于点
,连接
交
于点
,点
是
上一点,连接
、
,当
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/785807202918a3a53f6b80288621e712.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/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/306d0558404d9961e234937d88787ca9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/9b5d627d-2a46-4ad1-8b9a-5097a7b4ed3e.png?resizew=314)
(1)求抛物线的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73dcd861c12f959feae5c13389c5fe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a679040c4d556723e482bacbab41356d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af9fe604650641a65843cc05d3aca25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)在(2)的条件下,过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0234cd0cb930b3179609d289c90e22cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0234cd0cb930b3179609d289c90e22cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8b62dc033d86ee9e561b8903796701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bd1d8855b4088de2767d88000030c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】抛物线
与x轴交于A、B两点,与y轴交于点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/ec1e4f6f-cbaa-47b7-bc3e-613eb67fc6cf.png?resizew=325)
(1)如图1,若点A在x轴的负半轴上,△OBC为等腰直角三角形,求抛物线的解析式;
(2)在(1)的条件下,点D(-2,5)是抛物线上一点,点M为直线BC下方抛物线上一动点,令四边形BDCM的面积为S,求S的最大值及此时点M的坐标;
(3)若点P是抛物线对称轴上一点,且点P的纵坐标为-9,作直线PC,将直线PC向下平移n(n>0)个单位长度得到直线
,若直线
与抛物线有且仅有一个交点.
①直接写出n关于m的函数关系式;
②直接写出当1≤n≤5时m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3293ca1533035fef124d37a14f5ab5a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/ec1e4f6f-cbaa-47b7-bc3e-613eb67fc6cf.png?resizew=325)
(1)如图1,若点A在x轴的负半轴上,△OBC为等腰直角三角形,求抛物线的解析式;
(2)在(1)的条件下,点D(-2,5)是抛物线上一点,点M为直线BC下方抛物线上一动点,令四边形BDCM的面积为S,求S的最大值及此时点M的坐标;
(3)若点P是抛物线对称轴上一点,且点P的纵坐标为-9,作直线PC,将直线PC向下平移n(n>0)个单位长度得到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c10975392597a5d2758e8a611dc5143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c10975392597a5d2758e8a611dc5143.png)
①直接写出n关于m的函数关系式;
②直接写出当1≤n≤5时m的取值范围.
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
真题
【推荐1】如图,在平面直角坐标系xOy中,抛物线
的顶点为A,与y轴的交点为B,连结AB,AC⊥AB,交y轴于点C,延长CA到点D,使AD=AC,连结BD.作AE∥x轴,DE∥y轴.
![](https://img.xkw.com/dksih/QBM/2013/9/13/1573684591132672/1573684597374976/STEM/84f0b3e2d62f4459b59d20e603bbd1f7.png)
(1)当m=2时,求点B的坐标;
(2)求DE的长?
(3)①设点D的坐标为(x,y),求y关于x的函数关系式?②过点D作AB的平行线,与第(3)①题确定的函数图象的另一个交点为P,当m为何值时,以,A,B,D,P为顶点的四边形是平行四边形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd92d907aa3f088911f9d9e96da97102.png)
![](https://img.xkw.com/dksih/QBM/2013/9/13/1573684591132672/1573684597374976/STEM/84f0b3e2d62f4459b59d20e603bbd1f7.png)
(1)当m=2时,求点B的坐标;
(2)求DE的长?
(3)①设点D的坐标为(x,y),求y关于x的函数关系式?②过点D作AB的平行线,与第(3)①题确定的函数图象的另一个交点为P,当m为何值时,以,A,B,D,P为顶点的四边形是平行四边形?
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】如图,直线
交x轴于点
,交y轴于点
,已知抛物线
经过点B,C,交x轴于另一点A.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/887d0469-7e38-4e16-b94b-4ccc27b3a36c.png?resizew=229)
(1)求抛物线的解析式;
(2)若P是第一象限内抛物线上一点,Q是直线
上一点,且以A,C,P,Q为顶点的四边形为平行四边形,求点Q的坐标;
(3)抛物线上是否存在点D,过D点作
于点E,使
与
相似?若存在,请求出点D的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da50ebd2656745259525c8b157e389e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e080dc845eac909af0945cbbd386bc8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c468dc5cc34c14a188493a21019e8f83.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/887d0469-7e38-4e16-b94b-4ccc27b3a36c.png?resizew=229)
(1)求抛物线的解析式;
(2)若P是第一象限内抛物线上一点,Q是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)抛物线上是否存在点D,过D点作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
您最近一年使用:0次