1 . (1)【问题探究】如图①,点B,C分别在
上,
米,
米,
米,
米,
米.
①探究
与
是否相似并说明理由;
②求
的长.
(2)【问题解决】如图②,四边形
规划为园林绿化区,对角线
将整个四边形分成面积相等的两部分,已知
米,四边形
的面积为
平方米,为了更好地美化环境,政府计划在
边上分别确定点E,F,在
边上确定点P,Q,使四边形
为矩形,在矩形
内种植花卉,在四边形
剩余区域种植草坪,为了方便市民观赏,计划在
之间修一条小路,并使得
最短,根据设计要求,求出
的最小值,并求出当
最小时,花卉种植区域的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564cc2c470001e7cd6fa28731a3875d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f703447bee4d03f0abb61c587e84cba9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2955c993391c78bd8679f278fe085d8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177b669045fbcdedb5cd59fae4172275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddac02999b39acb1e80c65a76b6b22a8.png)
①探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)【问题解决】如图②,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25a3debb802dd4f3e774b16ad1c154ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6968dabccc3c09802f648e8d2fdf2325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa49835cb36d11ba406fa8cabbecd69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8552ad9af3f75f11ec1d2aae32147fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8552ad9af3f75f11ec1d2aae32147fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/24/9858d924-143f-4b34-ba58-373f399b3fa6.png?resizew=255)
您最近一年使用:0次
2023-05-20更新
|
115次组卷
|
3卷引用:湖南省永州市冷水滩区李达中学2023-2024学年九年级上学期第三次月考数学试题
2 . 如图,在平面直角坐标系中,抛物线
经过
、
两点,其顶点为
,连接
,点
是线段
上一个动点(不与
、
重合).
(1)求抛物线的函数解析式,并写出顶点
的坐标;
(2)过点
作
轴于点
,连接
.求
面积
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a18a7caa080988802ba1145b4fe4203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/6/da7dab75-8fe6-4a9a-80ce-db288438ff34.png?resizew=173)
(1)求抛物线的函数解析式,并写出顶点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ad84a84ed0f550020f561dae537a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe40405cd7bd60d69dd535d6da85c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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2023九年级下·全国·专题练习
3 . 如图,一农户要建一个矩形鸡舍,为了节省材料鸡舍的一边利用长为a米的墙,另外三边用长为27米的建筑材料围成,为方便进出,在垂直墙的一边留下一个宽1米的门.设
米时,鸡舍面积为S平方米.
![](https://img.xkw.com/dksih/QBM/2023/4/27/3225489125244928/3225634694479872/STEM/42459c7689f04424bd6f3c18ad579f32.png?resizew=201)
(1)求S关于x的函数表达式及x的取值范围.
(2)在(1)的条件下,当
为多少时,鸡舍的面积为90平方米?
(3)若住房墙的长度足够长,问鸡舍面积能否达到100平方米?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7a3d679b4dae63575903387a76ce45.png)
![](https://img.xkw.com/dksih/QBM/2023/4/27/3225489125244928/3225634694479872/STEM/42459c7689f04424bd6f3c18ad579f32.png?resizew=201)
(1)求S关于x的函数表达式及x的取值范围.
(2)在(1)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)若住房墙的长度足够长,问鸡舍面积能否达到100平方米?
您最近一年使用:0次
2023-04-27更新
|
544次组卷
|
4卷引用:数学(湖南长沙卷)-学易金卷:2023年中考考前押题密卷(含考试版、全解全析、参考答案、答题卡)
(已下线)数学(湖南长沙卷)-学易金卷:2023年中考考前押题密卷(含考试版、全解全析、参考答案、答题卡)(已下线)专题2.4 二次函数的实际应用-几何问题(专项训练)-2022-2023学年九年级数学下册《同步考点解读·专题训练》(北师大版)(已下线)第10讲 实际问题与二次函数-【暑假自学课】2023年新九年级数学暑假精品课(人教版)(已下线)第19讲 二次函数的应用-【暑假自学课】2023年新九年级数学暑假精品课(沪教版,上海专用)
2023·湖南长沙·模拟预测
4 . 如图1,以正方形
的顶点A为圆心,作圆弧
,P是
上一动点,过点P作
的切线交
于点E,交
于点F,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/3f66f831-7b3a-479e-8b6a-be0c12a38cbc.png?resizew=343)
(1)求
的大小;
(2)如图2,连接
.①求证:
为定值;②当
,
时,求
的面积;
(3)如果
的周长为20,设
,
的面积为y,求y关于x的函数关系式,并求出y的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6ffb78dad3375efa3b08ab518553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6ffb78dad3375efa3b08ab518553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/3f66f831-7b3a-479e-8b6a-be0c12a38cbc.png?resizew=343)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e31edc5b71c488ca9942d70d9298f01.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38eca12a7e16343ead5c1bdb5a3345b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de853a263e59781532f89fdab2a0acb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e410f25977e460b14e0512c2dd348e1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15347d7870120325031b981affdac48.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b2d5386945775470b9cf5b29dcaa23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c29bf5a05dd46f6e03dfd22c32f7ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15347d7870120325031b981affdac48.png)
您最近一年使用:0次
5 . 如图,抛物线
经过
、
、
三点,对称轴与抛物线相交于点
、与
相交于点
,与
轴交于点
,连接
.
(2)抛物线上是否存在一点
,使
与
的面积相等,若存在,请求出点
的坐标;若不存在,说明理由.
(3)抛物线上存在一点
,使
,请直接写出点
的坐标;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c052d7af2f98d95bac8725b608fba0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)抛物线上是否存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9cc4de98250bee5e6bd85c1c1ba17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06c183bee668a57b48c14b0c9c33cf28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(3)抛物线上存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2331b88664660d9dcbeb7e77a25047e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
您最近一年使用:0次
2023-04-02更新
|
506次组卷
|
5卷引用:2023年湖南省永州市冷水滩区京华中学中考一模数学试卷
2023·湖南长沙·一模
解题方法
6 . 如图,抛物线
的顶点为A,与y轴交于点C.过点A作线段
垂直y轴交于点B,过点C作线段
垂直抛物线的对称轴交于点D,我们称矩形
为抛物线
的“伴随矩形”.
![](https://img.xkw.com/dksih/QBM/2023/3/30/3205539689947136/3206579672129536/STEM/da7904f18595403cacff02bedcd83a03.png?resizew=237)
(1)请根据定义求出抛物线
的“伴随矩形”
的面积;
(2)已知抛物线
的“伴随矩形”为矩形
,若矩形
的四边与直线
共有两个交点,且与双曲线
无交点,请直接写出m的取值范围;
(3)若对于开口向上的抛物线
,当
时,方程
的两个根为
,且满足下列条件:①该抛物线的“伴随矩形”
为正方形;②
(其中
表示矩形
的面积);③
的最小值为
.请求出满足条件的t值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62fe08d7899272f6f827657f0bc873a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62fe08d7899272f6f827657f0bc873a.png)
![](https://img.xkw.com/dksih/QBM/2023/3/30/3205539689947136/3206579672129536/STEM/da7904f18595403cacff02bedcd83a03.png?resizew=237)
(1)请根据定义求出抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b8be7270512eeffe2088758a75d708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)已知抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81f7c239262b3fb50df84e5272b8a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc851bb30de79e43df364ce61309a2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc717391906671c91bb8e5528c02aa1d.png)
(3)若对于开口向上的抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6490749e58a4f866c7f682aa87d759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0469889402fb2c6e0faa0d846882b697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae86c6e3dea3fd259ac94cc1db57d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2719983a21e7534cf986a131dffc02d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a523213cc4b4389dbfee29f2e479c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aa08d344c7c9ff2a67a39402c89a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed3de5348ecce4fde01185f28294dd5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb8a138fdb65dae0ec12c46b33d69a8.png)
您最近一年使用:0次
7 . 如图,在矩形
中,点P是边上任意一点(点P不与B、C重合),连接
,作
,交
于点Q,若
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/1/68e90194-4948-41f6-ae57-4f75984aebe5.png?resizew=136)
(1)试证明:
;
(2)当
为多少时,
最长,最长是多少?
(3)试探究,是否存在一点P,使
是等腰直角三角形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287eb7b9d7d5b93b81550f9c9d54a9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b4da8d254b7d76b7615d7f7cd824a3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/1/68e90194-4948-41f6-ae57-4f75984aebe5.png?resizew=136)
(1)试证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96897f11c3d6e435f8603168908cbddb.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
(3)试探究,是否存在一点P,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
您最近一年使用:0次
2023-03-29更新
|
100次组卷
|
2卷引用:2023年湖南省衡阳市衡山实验中学中考数学一模试卷
8 . 如图,用长为
的铝合金条制成“日”字形矩形窗户,使窗户的透光面积最大,那么这个窗户的最大透光面积是______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e17ee14bd91bfff409c06fd434f6745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/18/e5ae91c3-e6e5-491f-b904-548b1c3df532.png?resizew=108)
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名校
9 . 已知抛物线
的顶点为
,与y轴的交点为
.
(1)求
的表达式;
(2)若直线
与
仅有唯一的交点,求m的值;
(3)若抛物线
关于y轴对称的抛物线记作
,平行于x轴的直线记作
,试结合图形回答:当n为何值时,
与
和
共有:①两个交点;②三个交点;③四个交点;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7936359df4c926b72b48c6fdae55f12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12652efb124f262e3cbefaed4962bb58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14fb45f3b5485ae0944808625c59af96.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/10/efd3ddbb-7d8b-4397-bb67-3e339a4ecd4e.png?resizew=201)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7936359df4c926b72b48c6fdae55f12d.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ced9da0d768b765fd76bf58eceb2863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7936359df4c926b72b48c6fdae55f12d.png)
(3)若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7936359df4c926b72b48c6fdae55f12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76f79be89b8c6227b68eded6b675546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621c65dc9b43d285341bd428bfc5972f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7936359df4c926b72b48c6fdae55f12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76f79be89b8c6227b68eded6b675546.png)
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2023-08-08更新
|
140次组卷
|
2卷引用:湖南省益阳市南县城西中学2022-2023学年九年级上学期期中数学试题
10 . 如图1,点
,
,a,b满足
,抛物线经过A,B两点,点
关于点B的对称点M刚好落在抛物线上.
(1)求抛物线的解析式;
(2)如图2,点
为第一象限抛物线上一动点,过点
作
轴交直线
于点
,过点
作
交
轴于点
,求
的最大值及此时点
的坐标;
(3)过点
作
平行于
轴交
于点
,若点
为抛物线上的一点,点
在
轴上,连接
,
,
.是否存在点
使得
与
相似?若存在,请直接写出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c240561788bc63f41a6703219fb66d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c09615735d331befd07664aa47cb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8091be6be83bb02dc1f84f1790fb6626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2f117dc9adcb8fa7acf25bd2cbf283.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/8/0b114633-a7fb-4590-90d1-689a14ef28d0.png?resizew=232)
(1)求抛物线的解析式;
(2)如图2,点
![](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/20008ade7e23b01f5abdee57fa05a63d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0b73db43b2ded725b5ec0fde022b32c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bce17597a7a6a83cd4287d424db6b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/8/8ce7be51-045e-4efe-a5c2-623bb6775b24.png?resizew=245)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f9fba8a4098c1a0515286eb8d616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f8b3d45ae1743416253d835c054456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/8/0056249c-c909-411b-9898-fd8f48010f9f.png?resizew=234)
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