1 . 如图,抛物线
与
轴相交于点
,交
轴于点
,点
是线段
上一动点,
轴,交直线
于点
,交抛物线于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/b6bf23a4-125f-4dc2-bf32-40f226ef44d2.png?resizew=177)
(1)求抛物线的函数表达式;
(2)连接
,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c79f455cbeb1ba9c94c7e1e05e88b0.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0522607eeb42a499c0f5b040bbdd42e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/2024/2/26/b6bf23a4-125f-4dc2-bf32-40f226ef44d2.png?resizew=177)
(1)求抛物线的函数表达式;
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f214157f723f9bfbe4d3589cdcb6a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f08a8c44ba20b6e07d830274f68981.png)
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2 . 如图:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/04ab5dae-1898-4e22-977a-c9333ab31b0a.png?resizew=317)
(1)抛物线
与
轴交于
两点,与
轴交于
点,
.求
的值.
(2)若
,其余条件不变,能求出
的值?若不能,请说明理由;若能,不写过程,请写出答案.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/04ab5dae-1898-4e22-977a-c9333ab31b0a.png?resizew=317)
(1)抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1d44730fe33313119ffb8d188219fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e47690ed332c573186992b6d25654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392b9e1a179a6676362679354a9e7e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
3 . 如图,二次函数
的图象与x轴交于点
,
,与y轴交于点C,P为
上方抛物线上一动点,过P作垂直于x轴的直线l交线段
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/4452cec2-147f-4029-b97f-f271261933c9.png?resizew=175)
(1)求出二次函数
和
所在直线的表达式;
(2)在动直线l移动的过程中,试求线段
长度的最大值,并求出此时点P的坐标;
(3)抛物线上是否存在点Q,使
的面积等于
的面积,若存在,请直接写出点Q的坐标;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceba6b11658f2cc227b1f550ba25c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69fff64ee6ea236550185efc7ed1b598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/4452cec2-147f-4029-b97f-f271261933c9.png?resizew=175)
(1)求出二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceba6b11658f2cc227b1f550ba25c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)在动直线l移动的过程中,试求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
(3)抛物线上是否存在点Q,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b17f20c25bb16153b5f2d25062ed7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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4 . 如图,直线
与
轴交于点
,与
轴分别交于点
,二次函数
的图象过
两点.
(2)将抛物线沿
轴向右平移
个单位长度,当
的值为多少时,平移后所得新抛物线与直线
只有一个公共点?
(3)将抛物线沿
轴向左平移
个单位长度,所得新抛物线与原抛物线相交于点
,当点
在第二象限,求
面积的最大值,并求此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c608def11fa0e2b34f05592ef1d11fd8.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(2)将抛物线沿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88dc86ad6c966febbad5cb0657dd649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)将抛物线沿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88dc86ad6c966febbad5cb0657dd649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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5 . 已知直线
与
轴、
轴分别相交于A、B两点,抛物线
经过
、
两点,点
在线段
上,从
点出发,向点
以每秒1个单位的速度匀速运动;同时点
在线段
上,从点
出发,向点
以每秒
个单位的速度匀速运动,连接
,设运动时间为
秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/4808db41-448e-4dc2-89d4-8c7ec2816763.png?resizew=140)
(1)求抛物线关系式;
(2)当
为何值时,
为直角三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c608def11fa0e2b34f05592ef1d11fd8.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/22e59da5115d0dafea24822245f92c48.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/4808db41-448e-4dc2-89d4-8c7ec2816763.png?resizew=140)
(1)求抛物线关系式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
您最近一年使用:0次
2024-02-26更新
|
31次组卷
|
2卷引用:山东省泰安市泰山区2023-2024学年九年级上学期期末数学试题
6 . 在平面直角坐标系中,抛物线
与y轴交于点
,与x轴交于点
和点C,抛物线的顶点为P.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/e5654723-6a25-4d40-bce1-28c00e70201a.png?resizew=117)
(1)求此抛物线的解析式和顶点P的坐标;
(2)若点D,E均在此抛物线上,其横坐标分别为m,
(
).且D,E两点的纵坐标的差为8.
①求m的值;
②将点C向上平移2m个单位得到点
,将抛物线沿x轴向右平移n个单位得到新抛物线,点D的对应点为点
,点E的对应点为点
,顶点P的对应点为点
,在抛物线平移过程中,求
的最小值,并求出新抛物线的顶点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96dde9c4aad0536c069127df0d4b12f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee33736169c249a029f478a605dc2c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec0bc3a43265b63b6964476ca327fab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/e5654723-6a25-4d40-bce1-28c00e70201a.png?resizew=117)
(1)求此抛物线的解析式和顶点P的坐标;
(2)若点D,E均在此抛物线上,其横坐标分别为m,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad491e5b5e14c49ef8b7004ebcfcef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
①求m的值;
②将点C向上平移2m个单位得到点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c5799e4298966c48367bff087adf11c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
您最近一年使用:0次
7 . 如图,抛物线
经过
,
,直线
交x轴于点C,P是直线
上方抛物线上的一个动点,
,垂足为点D,
轴,交直线
于点E.
(1)求抛物线所对应的函数表达式;
(2)当
的周长最大时,求点P的坐标及
的周长最大值;
(3)将抛物线
平移.使得新抛物线的顶点为(2)中的P点,M为新抛物线上的点,N为新抛物线对称轴上的点,若以点A,B,M,N为顶点的四边形是平行四边形,请直接写出符合条件的点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea44f5aca4d1bb19622ed3e508477d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2fef5a03ba996a7c24f88fd49294eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0215fcd72572bb524eca8a7fdc3f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/25/0445f2c5-db31-4905-a094-c7928c4f2b7c.png?resizew=189)
(1)求抛物线所对应的函数表达式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cff7399ecc698e2fb415147c96d0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cff7399ecc698e2fb415147c96d0d03.png)
(3)将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
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名校
8 . 如图,在平面直角坐标系
中,抛物线经
过三点
、
、
,已知
,
.
的解析式.
(2)点
是直线
下方的抛物线上的一动点(不与点
、
重合),过点
作
轴的垂线,垂足为
,交直线
于点
,作
于点
.
①动点
在什么位置时,
的周长最大,求此时
点的坐标;
②连接
,以
为边作图示一侧的正方形
,随着点
的运动,正方形的大小、位置也随之改变.当顶点
或
恰好搭在抛物线对称轴上时,求此时对应的
点的坐标.(结果保留根号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358e2987096a67189bcc2a642da39524.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c33700c3358cbbd8db376f9f0613b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a65d8ff9318909d18b6e1c76f90d61f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
①动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cff7399ecc698e2fb415147c96d0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce97dc2e629505f7bd723e3abbcb8107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2024-02-25更新
|
124次组卷
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2卷引用:山东省济南市历下区济南甸柳第一中学2023-2024学年九年级上学期1月月考数学试题
9 . 如图,抛物线
与x轴交于A、B两点,与y轴交于点C,连接
、
,设
关系式为
.若
,
,D是y轴右侧抛物线上一点,设其横坐标为m,
于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/fda2974e-e203-481f-941f-94ba387e4e3d.png?resizew=303)
(1)求抛物线的函数关系式;
(2)当点D位于直线
下方时,求
长度的最大值;
(3)当
与
相似时,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/716035f859f657a8ab89c49c966f83d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea8578000985b74cbcaa3de6e14cb26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a99044cdedf9e67bffd16a7eeeadf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe234c66fa40e787f784432fa6003f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/fda2974e-e203-481f-941f-94ba387e4e3d.png?resizew=303)
(1)求抛物线的函数关系式;
(2)当点D位于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbf9680f74a9ac5d934304654ce2771.png)
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10 . 抛物线
与y轴交于点A,顶点为D.
(1)若抛物线过点
,求抛物线顶点D和点A坐标;
(2)如图,在(1)的条件下,连接
,点N为线段
下方抛物线上一点,求
面积的最大值;
(3)已知点
,
,若线段
与抛物线恰有一个交点,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e4fa447beeb4f963ca6dcd05d4822e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/8453cf29-ccdc-4451-9ea7-1bb0afd49ed3.png?resizew=141)
(1)若抛物线过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16290c9343bb9653eee9eea7567cd7d3.png)
(2)如图,在(1)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7ad41b36674fd6e90176ee24cdefbb.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3dfcf2896f512c9b6ec997bd7868d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd5d38097b6c70ef0adb19036a7670e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次