如图,抛物线
经过
,
两点,与
轴交于点
,连接
.
(2)如图2,直线
:
经过点A,点
为直线
上的一个动点,且位于
轴的上方,点
为抛物线上的一个动点,当
轴时,作
,交抛物线于点
(点
在点
的右侧),以
,
为邻边构造矩形
,求该矩形周长的最小值;
(3)如图3,设抛物线的顶点为
,在(2)的条件下,当矩形
的周长取最小值时,抛物线上是否存在点
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26cbd39cbef2bb66a619a90c772f0521.png)
?若存在,请求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d44326c214c7a5ecc3068a29ec96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527adf33876b600568772d6ff0a91310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c044362183e52c9f684765b8a77fba0.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)如图2,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023ab3a7eb0f59993c7608576e47c0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c64cadaba1ccc1e06c62b4d68fc542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329c893cdaede883a62f613c46d86928.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
(3)如图3,设抛物线的顶点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26cbd39cbef2bb66a619a90c772f0521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1caeb4e336d644dfa93e5aff03dd903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
2021·湖南岳阳·中考真题 查看更多[7]
湖南省岳阳市2021年中考数学真题(已下线)专题08 二次函数与矩形正方形存在性问题-挑战2022年中考数学压轴题之学霸秘笈大揭秘2022年山东省聊城市临清市九年级第二次模拟考试数学试题2022年天津市红桥区九年级三模数学试题(已下线)专题11 二次函数-学易金卷:三年(2021-2023)中考数学真题分项汇编(湖南专用)(已下线)专题12 函数综合-学易金卷:三年(2021-2023)中考数学真题分项汇编(湖南专用)湖南省永州市宁远县2023-2024学年九年级下学期期中数学试题
更新时间:2021-06-21 18:18:32
|
相似题推荐
解答题-问答题
|
困难
(0.15)
【推荐1】已知:抛物线
与
轴交于点
、
,与
轴交于点
,直线
的解析式为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/95f7b7dd-5f4c-4635-b821-6efe6066f13d.png?resizew=679)
(1)求
的值;
(2)如图1,点
为第四象限的抛物线上一点,连接
交
轴于点
,设点
的横坐标为
,
的长为
,求
与
的函数解析式;
(3)如图2,在(2)的条件下,点
为第一象限的直线
上一点,连接
交
轴于点
,连接
并延长至点
. 连接
,
交
轴于点
,
,
,若
,
,点
为
上一点,连接
,
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf6c9511a79f14766bad269876cb5cb.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1882d2f789de61b5b7e3ec952e13b99e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/95f7b7dd-5f4c-4635-b821-6efe6066f13d.png?resizew=679)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/8455657dde27aabe6adb7b188e031c11.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/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)如图2,在(2)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2925cf3fb364b365261bb14bbbd2717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be761c7e0ea0a20cc18d353b816bfee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/970e58bfdd8bb6c8a7b9a8e4626e8b82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea15cb58f81aaa49877f2e7e16030dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
【推荐2】苏科版八下数学教材中,对正方形的性质和判定进行了探究,同时课本94页第19题对正方形中特殊线段的位置和数量关系也进行了探究,在此,我们也来作进一步的探究,如图1,探究所提供的正方形
的边长都为2.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/25/f59bc153-58a2-444d-b8a8-a370c4af87a6.png?resizew=316)
【探究】
(1)如图2,在正方形
中,如果点E、F分别在
、
上,且
,垂足为M,那么
与
相等吗?证明你的结论.
【应用】
(2)如图3,在正方形
中,动点E、F分别在边
、
上,将正方形
沿直线
折叠,使点B对应的点M始终落在边
上(点M不与点A、D重合),点C落在点N处,
与
交于点P,设
,求线段
的长(用含t的式子表示).
【拓展】
(3)如图4,在正方形
中,E是
的中点,F、G分别是
、
上的动点,且
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/25/f59bc153-58a2-444d-b8a8-a370c4af87a6.png?resizew=316)
【探究】
(1)如图2,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/a4e22ba3e6e1c1d6b12d9b8baa8d1f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
【应用】
(2)如图3,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a387e25219d186235ae6ad0295a270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1460aa3d83df61f6c411b34412135451.png)
【拓展】
(3)如图4,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/82d3a004c4f6c29bd52364eb658c704b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c31bb6924117fac5205f3d818313143.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐1】如图,在平面直角坐标系中,抛物线
(
为常数,
)与
轴交于点
,过点
作垂直于
轴的直线
.
是该抛物线上的任意一点,其横坐标为
,过点
作
于点
,
是直线
上的一点,其横坐标为
.以
、
为边作矩形
.
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982793662644224/2984949017092096/STEM/dd48f123-b6fb-4d54-a6fc-f4b8244cd716.png?resizew=178)
(1)求
的值;
(2)当点
与点
重合时,求
的值;
(3)当矩形
为正方形时,求
的值;
(4)当抛物线在矩形
内的部分所对应的函数值
随
的增大而增大时,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d11e456818540ca10cb4bbd85f48f1a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03b011f69dfc5262a3d82f64676739b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f94c4f6b762fddb0e313050ef6932eb.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b9d83969b6a8e27e57ab71b34e2b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a937ed092e74a719f4976989de58cb33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982793662644224/2984949017092096/STEM/dd48f123-b6fb-4d54-a6fc-f4b8244cd716.png?resizew=178)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)当矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(4)当抛物线在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】(1)如图
,半径为
的
外有一点
,且
,点
在
上,则
的最大值和最小值分别是______和______;
(2)如图
,在矩形
中,
,
,点
在
上,点
在
上,且
,连接
、
,求
最小时
的长;
(3)如图
,在
中,
,
,点
到
的距离为
,动点
、
在
边上运动,始终保持
,在
边上有一个直径为
的半圆
,连接
与半圆
交于点
,连接
、
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ba944677df353d7824eb3afd9e2ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51dfab0c1ec275ff83d08c7293968c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c118858379800688c993a8b61270b356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e5bfc9dfd8d5648d07cbe995ca73c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b03bb56c7e76954b192bd8595a0865a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e4123975f257306440158659634c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1496042c1d721cffd25053e997a9a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1460aa3d83df61f6c411b34412135451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f7e84aa7a03c6e705b397f2ea46c49.png)
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解答题-问答题
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解题方法
【推荐1】如图1,在平面直角坐标系中,抛物线y=
与x轴交于A,C(A在C的左侧),点B在抛物线上,其横坐标为1,连接BC,BO,点F为OB中点.
![](https://img.xkw.com/dksih/QBM/2020/3/24/2433551940517888/2433664072540160/STEM/eddf8a9fefd7417ca75199fddb07780d.png?resizew=413)
(1)求直线BC的函数表达式;
(2)如图2,若点G与点B关于抛物线对称轴对称,直线BG与y轴交于点M,点N是线段BG上的一动点,连接NF,MF,当∠NFO=3∠BNF时,连接CN,将直线BO绕点O旋转,记旋转中的直线BO为B′O,直线B′O与直线CN交于点Q,当△OCQ为等腰三角形时,求点Q的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8397c7f8c5886e69c3088723fb64789f.png)
![](https://img.xkw.com/dksih/QBM/2020/3/24/2433551940517888/2433664072540160/STEM/eddf8a9fefd7417ca75199fddb07780d.png?resizew=413)
(1)求直线BC的函数表达式;
(2)如图2,若点G与点B关于抛物线对称轴对称,直线BG与y轴交于点M,点N是线段BG上的一动点,连接NF,MF,当∠NFO=3∠BNF时,连接CN,将直线BO绕点O旋转,记旋转中的直线BO为B′O,直线B′O与直线CN交于点Q,当△OCQ为等腰三角形时,求点Q的坐标.
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解题方法
【推荐2】在
中,
.
(1)如图.分别过
、
两点作经过点
的直线的垂线,垂足分别为
、
,求证:
.
![](https://img.xkw.com/dksih/QBM/2020/6/26/2493106506457088/2494620779872256/STEM/e848e1b0-ca73-464c-93d1-271fbafa4c15.png?resizew=190)
(2)如图,
是边
上一点,
,
,求
的值.
![](https://img.xkw.com/dksih/QBM/2020/6/26/2493106506457088/2494620779872256/STEM/edf5ac1e-cf1f-4eb8-81a1-a90186b71aa5.png)
(3)如图,
是边
延长线上一点,
,
,
,
,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
(1)如图.分别过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d74a12db7caa320225df15dfa3c06.png)
![](https://img.xkw.com/dksih/QBM/2020/6/26/2493106506457088/2494620779872256/STEM/e848e1b0-ca73-464c-93d1-271fbafa4c15.png?resizew=190)
(2)如图,
![](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/4fb5dd4823910be010f4807f8ad92c0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac79ab71f6eee8f0d05e6ee5342d6741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721e29b775e696045f44a4b1e7f74ef2.png)
![](https://img.xkw.com/dksih/QBM/2020/6/26/2493106506457088/2494620779872256/STEM/edf5ac1e-cf1f-4eb8-81a1-a90186b71aa5.png)
(3)如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224e1773ea86c21ec16fa26ae607e952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a2ccf448d0d8499a85092655a37309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704e0c9c1537a2e83517d59d8487a830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d253bcebd5c3c38f3ab18c6c723edc16.png)
![](https://img.xkw.com/dksih/QBM/2020/6/26/2493106506457088/2494620779872256/STEM/d51a39ff-2ba8-4409-93b8-c91d270685f1.png?resizew=213)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
真题
【推荐1】在平面直角坐标系xOy中(O为坐标原点),已知抛物线y=x2+bx+c过点A(4,0),B(1,﹣3).
(1)求b,c的值,并写出该抛物线的对称轴和顶点坐标;
(2)设抛物线的对称轴为直线l,点P(m,n)是抛物线上在第一象限的点,点E与点P关于直线l对称,点E与点F关于y轴对称,若四边形OAPF的面积为48,求点P的坐标;
(3)在(2)的条件下,设M是直线l上任意一点,试判断MP+MA是否存在最小值?若存在,求出这个最小值及相应的点M的坐标;若不存在,请说明理由.
(1)求b,c的值,并写出该抛物线的对称轴和顶点坐标;
(2)设抛物线的对称轴为直线l,点P(m,n)是抛物线上在第一象限的点,点E与点P关于直线l对称,点E与点F关于y轴对称,若四边形OAPF的面积为48,求点P的坐标;
(3)在(2)的条件下,设M是直线l上任意一点,试判断MP+MA是否存在最小值?若存在,求出这个最小值及相应的点M的坐标;若不存在,请说明理由.
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困难
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名校
解题方法
【推荐2】如图1,在平面直角坐标系中,抛物线
与x轴交于A、B两点(点A在点B的左侧),与y轴交于点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/4ef56d57-1fcb-44c9-a7db-1de22636546d.png?resizew=497)
(1)求A、C两点的坐标;
(2)连接AC,点P为直线AC上方抛物线上(不与A、C重合)的一动点,过点P作PD⊥AC交AC于点D,PE⊥x轴交AC于点E,求PD+DE的最大值及此时点P的坐标;
(3)如图2,将原抛物线沿射线CB方向平移3
个单位得到新抛物线y',点M为新抛物线y'对称轴上一点,在新抛物线y'上是否存在一点N,使以点C、A、M、N为顶点的四边形为平行四边形,若存在,请直接写出点M的坐标,并选择一个你喜欢的点写出求解过程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5330547317c7463ef5767a72e73192.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/4ef56d57-1fcb-44c9-a7db-1de22636546d.png?resizew=497)
(1)求A、C两点的坐标;
(2)连接AC,点P为直线AC上方抛物线上(不与A、C重合)的一动点,过点P作PD⊥AC交AC于点D,PE⊥x轴交AC于点E,求PD+DE的最大值及此时点P的坐标;
(3)如图2,将原抛物线沿射线CB方向平移3
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
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名校
【推荐3】如图1,抛物线
与x轴交于
,
两点,交y轴于点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c052d7af2f98d95bac8725b608fba0fc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/23/04df96c7-a177-4d08-bacc-f88b8e49b8e8.png?resizew=322)
(1)求抛物线的解析式;
(2)如图2,点P为直线AC上方且抛物线对称轴左侧的抛物线上一点,过点P作х轴的平行线交抛物线于点D,过点P作y轴的平行线交AC于点H,求
的最大值及此时点P的坐标;
(3)把抛物线
向右平移
个单位,再向上平移
个单位得新抛物线,在新抛物线对称轴上找一点M,在新抛物线上找一点N,直接写出所有使得以点A,C,M,N为顶点的四边形是平行四边形的点M的坐标,并把求其中一个点M的坐标的过程写出来.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a525534689bd2701205d4ab17574c39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c052d7af2f98d95bac8725b608fba0fc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/23/04df96c7-a177-4d08-bacc-f88b8e49b8e8.png?resizew=322)
(1)求抛物线的解析式;
(2)如图2,点P为直线AC上方且抛物线对称轴左侧的抛物线上一点,过点P作х轴的平行线交抛物线于点D,过点P作y轴的平行线交AC于点H,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae48dc0c26ce4407ded6ce961781c41a.png)
(3)把抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a954eb4370c2aa523f327bf1e6a5e2f7.png)
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