如图,抛物线
与坐标轴交于点
、
、
,点P为抛物线上动点,设点
的横坐标为t.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/02fd025f-4c72-4a09-9abc-3d6a4f3e3ea2.png?resizew=163)
(1)若点C与点A关于抛物线的对称轴对称,求C点的坐标及抛物线的解析式;
(2)若点P在第四象限,连接
、
及
,当t为何值时,
的面积最大?最大面积是多少?
(3)在对称轴上是否存在点Q,使
为等腰三角形,若存在,直接写出点Q的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1394a4ed26d099cb02fb97ccb635f0f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f05b013e4b7166cbc87c5a83d6a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c8ef6f3640bd70e40f3b591c8bcc14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/02fd025f-4c72-4a09-9abc-3d6a4f3e3ea2.png?resizew=163)
(1)若点C与点A关于抛物线的对称轴对称,求C点的坐标及抛物线的解析式;
(2)若点P在第四象限,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe40405cd7bd60d69dd535d6da85c00.png)
(3)在对称轴上是否存在点Q,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6abaa9b5d36cd14020f15da086fa2078.png)
更新时间:2023-12-15 13:31:21
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相似题推荐
解答题-问答题
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(0.4)
【推荐1】如图1,抛物线
与x轴交于A、B两点且
,与y轴交于点C
.
(1)求抛物线的对称轴和解析式;
(2)抛物线的对称轴上有一点M,连接
,以M为旋转中心顺时针旋转
后,点C的对应点
恰好落在抛物线上,求点M坐标;
(3)如图2,点D是抛物线顶点,点P是抛物线上一点,连接
交于H,当
时,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9b0fcaa6deb9bac941a4366c44f7ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe4fae396e5cb2d8327ded573742272.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/25140434-6239-4eda-ab2f-2da7283a7cf7.png?resizew=258)
(1)求抛物线的对称轴和解析式;
(2)抛物线的对称轴上有一点M,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e210795a966bd5dc1293479ab1988b.png)
(3)如图2,点D是抛物线顶点,点P是抛物线上一点,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e003eb82aacc50e4f2f047874161e3df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a540d5057ff2b475c468e6eec95a32c.png)
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【推荐2】在平面直角坐标系
中,对称轴为直线
的抛物线
与
轴正半轴,
轴正半轴分别交于点
,
,且
.
![](https://img.xkw.com/dksih/QBM/2023/5/3/3229589772124160/3231056316563456/STEM/32873f2765bf41838098dc0e43b69a17.png?resizew=152)
(1)求抛物线的解析式;
(2)设抛物线
与
轴的另一个交点为
,点
在抛物线
上,直线
交
轴于点
,过点
作
轴交抛物线
于点
.
①若
的面积是
面积的
倍,求点
的坐标;
②连接
交直线
于点
,当点
在抛物线对称轴右侧图象上,且在直线
的上方时,记
,
,
的面积分别为
,
,
,若
,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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96dde9c4aad0536c069127df0d4b12f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c8dbc31b2e14067ef2f34b4e25f114.png)
![](https://img.xkw.com/dksih/QBM/2023/5/3/3229589772124160/3231056316563456/STEM/32873f2765bf41838098dc0e43b69a17.png?resizew=152)
(1)求抛物线的解析式;
(2)设抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96dde9c4aad0536c069127df0d4b12f.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96dde9c4aad0536c069127df0d4b12f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.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/b4d6eb67e32034c7c7312d6442e5ef40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96dde9c4aad0536c069127df0d4b12f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d303a90093503c9dc6f12669cc9f842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d8c5b87693a15ee886b940f775e241d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698affd6a89113576ff5aa01f1b2cee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
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【推荐1】如图,在等腰直角三角形
中,
,
.点P(不与A、B重合)从点A出发,沿
方向以
的速度向终点B运动,在运动过程中,
交射线
于点Q,以线段
为边作等腰直角三角形
且
(点B、R位于
两侧).设
与
重叠部分图形的面积为
,点P的运动时间为t(s).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/314ac4c1-786b-45fb-a05e-b81b72dc32db.png?resizew=198)
(1)当点Q与点C重合时,
______.
(2)当点R落在边
上时,求t的值.
(3)求S与t之间的函数关系式.
(4)当点R与
的顶点C的连线平分
面积时,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83e7c8586eef5596aef5fb5160a196a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb147bedf12b89828deae1f69afc6f98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592053410fe89d92c3771ed67bf3aff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84733f9dc908ceb11459cc2aed580ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5647a2693bc8358ae55ce56e63d09de6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365d66326cb96650d10715ff76403063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c28abb154f41e1ca9816c9c9c2433ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab9091bc1886a3fd3d17160b2d41ded.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/314ac4c1-786b-45fb-a05e-b81b72dc32db.png?resizew=198)
(1)当点Q与点C重合时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c084dc62a6c09bcccc424c48e1b0e0a.png)
(2)当点R落在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
(3)求S与t之间的函数关系式.
(4)当点R与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】在Rt△ABC中,∠ABC=90°,∠ACB=30°,AB=2,点O是边AC的中点,连接OB.点P是边BC上的动点(不与点B、点C重合).连接OP,将线段OP绕点O逆时针旋转120°,得到线段OE,连接PE,CE.
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844508550397952/2846965350137856/STEM/d85a4e6b-7c59-4cda-95b3-162b830b78c0.png)
(1)如图1,
①求∠BOC的度数;
②求证:
;
③若∠BOP=15°,直接写出下列线段长: PC= ; PE= .
(2)如图2,延长EO至点G,使得OE=OG,连接AG,
①当点G恰好落在边BC上时,直接写出
的值;
②当A,P,G三点共线时,连接AE,以AE为斜边向上作等腰直角三角形AEF,直接写出此时点P与点F之间的距离.
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844508550397952/2846965350137856/STEM/d85a4e6b-7c59-4cda-95b3-162b830b78c0.png)
(1)如图1,
①求∠BOC的度数;
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7bf245e5b3d097c067ae09f2793f275.png)
③若∠BOP=15°,直接写出下列线段长: PC= ; PE= .
(2)如图2,延长EO至点G,使得OE=OG,连接AG,
①当点G恰好落在边BC上时,直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3eb77ea6d03f69cc4121d1c13dfa54b.png)
②当A,P,G三点共线时,连接AE,以AE为斜边向上作等腰直角三角形AEF,直接写出此时点P与点F之间的距离.
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解题方法
【推荐1】如图,
为
的外接圆,直径
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/2021/6/3/2735244077645824/2737648774701056/STEM/fdaabb76-b646-449b-b8ae-d7162c5e7a42.png)
(1)求证:
;
(2)过点
作
交
于点
.
①请补全图形,并证明:
;
②若
的半径为3,
,连接
.求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://img.xkw.com/dksih/QBM/2021/6/3/2735244077645824/2737648774701056/STEM/fdaabb76-b646-449b-b8ae-d7162c5e7a42.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b86c548461001fa163baaad02d075e.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3236c6b28c4ef223edf92539d7b7452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
①请补全图形,并证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c428f511bf28a2e9cad5b97311c764e7.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb27447c815a8a495ba5bf7040e265d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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【推荐2】在等边
中,点D为线段
上一动点,连接
,F为直线
上一动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/3/1eac61e3-4776-4750-9afb-05ced15baf33.png?resizew=414)
(1)如图1,当点D为
中点时,点F在线段
上,连接
.若
,
,求
的长;
(2)如图2,若点F为
延长线上一点,且
,点E为
延长线上一点,且
.猜想线段
,
,
之间存在的数量关系,并证明你的猜想;
(3)如图3,在(1)的条件下,G为线段
上一点,连接
,将线段
绕点F逆时针旋转
得到线段
,连接
.当
的值最小时,请直接写出
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/3/1eac61e3-4776-4750-9afb-05ced15baf33.png?resizew=414)
(1)如图1,当点D为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae341f580ff8fbf21f616fe900b0e4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)如图2,若点F为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3bc0cc876a60c8cbdccc6a9a0b5b993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9d56d71a66c4cffbcd47b0bb08aca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)如图3,在(1)的条件下,G为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a742dc62a43d3c94950b87d1fab096be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cbe493541ce13a176048d14fbdf003f.png)
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解答题-问答题
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较难
(0.4)
【推荐1】在平面直角坐标系中,已知抛物线
与x轴交于点
,
两点,与y轴交于点C,点P是抛物线上一点.
(2)当点P在直线
上方的抛物线上时,连接
交
于点D,如图1,连接
,
,
的面积记为
,
的面积记为
,当
的值最大时,求点P的坐标;
(3)当P为y轴左侧抛物线上任意一点时,过点P作x轴的垂线交直线
于点M,连结
,将
沿直线
翻折,当点M的对应点
恰好落在y轴上时,求出此时点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c33700c3358cbbd8db376f9f0613b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbb898663f98b8400a897913b4d3102.png)
(2)当点P在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
(3)当P为y轴左侧抛物线上任意一点时,过点P作x轴的垂线交直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf1490f8bd695ad195aa1a52fe36373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da895d8bd043625a0839128252130d9.png)
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解答题-问答题
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名校
【推荐2】如图,已知抛物线
与x轴交于点A,B(点A在点B的左侧),与y轴交于点C,过点B作直线
交抛物线于点D.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/0383cb9e-2ebb-4ed1-afd5-06d3d5e631d0.png?resizew=323)
(1)求点D的坐标;
(2)点P是直线
上方的抛物线上一点,连接
,交
于点E,连接
,
,求
面积的最大值及此时点P的坐标.
(3)将抛物线沿射线CA方向平移
单位得到新的抛物线
,点M是新抛物线
对称轴上一点,点N为平面直角坐标系内一点,直接写出所有以A,C,M,N为顶点的四边形为矩形的点N的坐标,并写出其中一个点N的坐标的求解过程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5188b26f5dbbdfc1f2ff61fad9823033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c631670e02d2a38e9c78708a3916140.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/0383cb9e-2ebb-4ed1-afd5-06d3d5e631d0.png?resizew=323)
(1)求点D的坐标;
(2)点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3cd61d00f89e68ccca2cac5c937783.png)
(3)将抛物线沿射线CA方向平移
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc627e8a6320ed55914c49e867c5fc32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
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