如图,抛物线
交
轴于
、
两点(点
在点
的左侧)坐标分别为
,
,交
轴于点
.
(2)如图1,过
轴上点
作
的垂线,交直线
于点
,交抛物线于点
,当
时,请求出点
的坐标;
(3)如图2,点
的坐标是
,点
为
轴上一动点,点
在抛物线上,把
沿
翻折,使点
刚好落在
轴上,请直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b2a489b5cf3185b70005f1489a3347.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab979573ebf184127b7117aa9c330d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0573e2af8a0dc8c6a1c0af067a324f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图1,过
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3979e4fe805d69f957a6b9fe4dcbe03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7ede0702d2c873101e9564545d9d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6f4dca8364e8ab8ab0df0b645bf7a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72f02ad5ced321b7fcc960742533a0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c018b37259f3ead2ab2d94bd744f44d.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/acc290b44635265137fdf13146b6a6d9.png)
更新时间:2024-04-13 13:35:55
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】抛物线C:y=
x[a(x﹣1)+x+1](a为任意实数).
(1)无论a取何值,抛物线C恒过定点 , .
(2)当a=1时,设抛物线C在第一象限依次经过的整数点(横、纵坐标均为整数的点)为A1,A2,……An,将抛物线C沿着直线y=x(x≥0)平移,将平移后的抛物线记为C n,抛物线C n经过点An,C n的顶点坐标为Mn(n为正整数且n=1,2,…,n,例如n=1时,抛物线C1经过点A1,C1的顶点坐标为M1).
①抛物线C2的解析式为 ,顶点坐标为 .
②抛物线C1上是否存在点P,使得PM1∥A2M2?若存在,求出点P的坐标,并判断四边形PM1M2A2的形状;若不存在,请说明理由.
③直接写出Mn﹣1,Mn两顶点间的距离: .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)无论a取何值,抛物线C恒过定点 , .
(2)当a=1时,设抛物线C在第一象限依次经过的整数点(横、纵坐标均为整数的点)为A1,A2,……An,将抛物线C沿着直线y=x(x≥0)平移,将平移后的抛物线记为C n,抛物线C n经过点An,C n的顶点坐标为Mn(n为正整数且n=1,2,…,n,例如n=1时,抛物线C1经过点A1,C1的顶点坐标为M1).
①抛物线C2的解析式为 ,顶点坐标为 .
②抛物线C1上是否存在点P,使得PM1∥A2M2?若存在,求出点P的坐标,并判断四边形PM1M2A2的形状;若不存在,请说明理由.
③直接写出Mn﹣1,Mn两顶点间的距离: .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/24/eefe2c6b-44f7-44b1-8ecd-c4639563bc5d.png?resizew=220)
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解答题-问答题
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【推荐2】如图,已知抛物线
与
轴交于
,
两点,与
轴交于点
,抛物线的对称轴为直线
,点
是直线
上一点.
(1)求抛物线的表达式;
(2)求
周长的最小值;
(3)将线段
绕点
旋转
,得到线段
,点
的对应点为点
,当点
在抛物线上时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358e2987096a67189bcc2a642da39524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/24/765c8ea5-824d-43e8-bedd-3fa1310833b8.png?resizew=271)
(1)求抛物线的表达式;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
(3)将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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解答题-证明题
|
较难
(0.4)
【推荐1】如图1,平行四边形
中,
于点E,
交
的延长线于点F.
![](https://img.xkw.com/dksih/QBM/2022/11/30/3120900111122432/3126588069068800/STEM/3a18e8508cc7496a984864f01668d101.png?resizew=309)
(1)求证
;
(2)连接
,分别交
于G、H(如图2),求证:
;
(3)在图2中,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0565aad421d5a0a34a8ec426567ed62e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76aae027f86e42bd67347c3d2f9ac7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2022/11/30/3120900111122432/3126588069068800/STEM/763e29843b184289a506cd3c9b0fcf36.png?resizew=320)
![](https://img.xkw.com/dksih/QBM/2022/11/30/3120900111122432/3126588069068800/STEM/3a18e8508cc7496a984864f01668d101.png?resizew=309)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/994aa924f85ee68d0f38c64e58926ba6.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09496a287af70b902b7a4a471fc2b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccdce77ba90b243541419d575d47945a.png)
(3)在图2中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/922ed23597af6ce19c69bb9d64e0a1d0.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】如图,在平面直角坐标系内,四边形
的顶点
是坐标原点,点
在
轴正半轴上,
,点
的坐标为
,点
在
轴正半轴上,
轴,垂足为点
,连接
,点
是
轴正半轴上的一个动点,设点
的横坐标为
.
![](https://img.xkw.com/dksih/QBM/2020/12/19/2617131366572032/2618972484534272/STEM/f9e25043-b779-45b8-a78f-00c8846eaf37.png?resizew=435)
(1)点
的坐标为_________,点
的坐标为_________;
(2)连接
,设
的面积为
.
①求
与
之间的函数关系式;②当
时,求出点
的坐标.
(3)点
是直线
上一点,当
是等腰三角形时,直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52705567101a48893de582656ef41527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/601b6e8e0de5e22fb87f5ecac715c5e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05de5eef286a1b48012246c0cf88a1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf4b43b6792b9ae78a1c8cae4e60524.png)
![](https://img.xkw.com/dksih/QBM/2020/12/19/2617131366572032/2618972484534272/STEM/f9e25043-b779-45b8-a78f-00c8846eaf37.png?resizew=435)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38489a85288b2d0218c9525b0ebd39a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)点
![](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/16e8c7968d57d2a20065a7cb15c9b4eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】如图①,已知点
、
在直线
上,且
于点
,且
,以
为直径在
的左侧作半圆
于点
,且
.
(1)若半圆
上有一点
,则
的最大值为__________;
(2)向右沿直线
平移
得到
.
①如图②,若
截半圆
的
的长为
,求
的度数;
②当半圆
与
的边相切时,求平移距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b9fb05fc724672777e7d84bde1a25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a442d8378128958ab12f64211c852f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac6d8d71cab4da8df649052d7a21655f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c66aec05b70fac089974881cc6a95c4.png)
(1)若半圆
![](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/6aa2b5e09f8ec785c59900a529390a02.png)
(2)向右沿直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79fccaefeefaf943571aee87c4ed5b1e.png)
①如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cfad1ba71a78d8f415335cde2f8c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6887f85b9085bd45e881e32a653e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c709f0d1af9c9d18f5d261050edf9916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75009dddfb34e018da6b7665d75b3a46.png)
②当半圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79fccaefeefaf943571aee87c4ed5b1e.png)
![](https://img.xkw.com/dksih/QBM/2020/5/2/2454060004630528/2456317534224384/STEM/c3f7a6d51c994a22a7dcd89152e7f0f4.png?resizew=130)
![](https://img.xkw.com/dksih/QBM/2020/5/2/2454060004630528/2456317534224384/STEM/fb733cba694743cc9b6c58c2c6c0ec6c.png?resizew=150)
您最近一年使用:0次
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|
较难
(0.4)
名校
【推荐2】(1)【方法尝试】
如图1,矩形
是矩形
以点A为旋转中心,按逆时针方向旋转
所得的图形,
分别是它们的对角线.则
与
数量关系_______,位置关系________;
如图2,在
和
中,
.将
绕点A在平面内逆时针旋转,设旋转角
为α(
),连接
.请判断线段
和
的数量关系和位置关系,并说明理由;
如图3,在
中,
,过点A作
,在射线
上取一点D,连接
,使得
,请求线段
的最大值.
如图1,矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcca8b9ba7a9fdd7d18ce9c1e86d2cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50cfd99a702ee24f9ef94e4b6f50101f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63316af0187cc8df3c02cea1c0755cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e7ba6e267dde1a65a98f9f36b585ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b36c401c523d7c67ad667a5db8b78e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b43490ca09467a4c8cd8cfe91c94e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcfbe55f659e4b597bb81680b20db4c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fe1363ef62726e068550cf6b145596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac34a83b57a4a096971505ba756ff9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eac21b9760772dbb7426e5b27c2f218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547f5f1377ef79e1369c19183066be62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
解答题-应用题
|
较难
(0.4)
【推荐1】已知抛物线
.
(1)当
时,求该抛物线的对称轴和顶点坐标;
(2)若已知点
,
,当抛物线与线段
有且只有一个交点时,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f39fc6459b00712f343c11d137e997.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
(2)若已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7941eefc4e262e5144d8dfe74f58fc5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812f75691c1b7e1062c11aeabf1e8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】在平面直角坐标系中,抛物线
(b、c为常数)的对称轴为直线
,与y轴交点的坐标为
),点A、点B均在这个抛物线上(点A在点B的左侧),点A的横坐标为m,点B的横坐标为
.
(1)求此抛物线对应的函数表达式.
(2)当点A、点B关于此抛物线的对称轴对称时,连结AB,求线段AB的长.
(3)将此抛物线上A、B两点之间的部分(包括A、B两点)记为图象G.
①当图象G对应的函数值y随x的增大而先减小后增大时,设图象G最高点的纵坐标与最低点的纵坐标的差为h,求h与m之间的函数关系式,并写出h的取值范围.
②设点E的坐标为
,点F的坐标为(
),连结EF,当线段EF和图象G有公共点时,直接写出m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1803dc3c76fd2b51696647aa18602412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4795a73792f7e02f0106ab72baca04c.png)
(1)求此抛物线对应的函数表达式.
(2)当点A、点B关于此抛物线的对称轴对称时,连结AB,求线段AB的长.
(3)将此抛物线上A、B两点之间的部分(包括A、B两点)记为图象G.
①当图象G对应的函数值y随x的增大而先减小后增大时,设图象G最高点的纵坐标与最低点的纵坐标的差为h,求h与m之间的函数关系式,并写出h的取值范围.
②设点E的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e0b3cc01e0bf743462142cde417fe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e68298802de2aa8863580607f8f126d.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐3】如图1,若抛物线
的顶点
在抛物线
上,抛物线
的顶点
在抛物线
上(点
与点
不重合),我们把这样的两抛物线
、
互称为“伴随抛物线”,可见一条抛物线的“伴随抛物线”可以有多条.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/8a6f190f-9d41-48cb-a58f-513e306e935a.png?resizew=182)
图1 图2
(1)在图1中,抛物线:
:
与
:
互为“伴随抛物线”,则点
的坐标为________,
的值为________;
(2)在图2中,已知抛物线
:
,它的“伴随抛物线”为
,若
与
轴相交的左侧交点为
,顶点为
,
与
轴相交的右侧交点为
,顶点为
,当四边形
为平行四边形时,求抛物线
的解析式;
(3)若抛物
的任意一条“伴随抛物线”的解析式为
,请写出
与
的关系式,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.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/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/70b902b4-1958-41ab-8a67-afa62d2343fc.png?resizew=176)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/8a6f190f-9d41-48cb-a58f-513e306e935a.png?resizew=182)
图1 图2
(1)在图1中,抛物线:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc3362e9fef2b5a8f13142c1c85528b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f865385cde9051b65a9ee69206f9db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)在图2中,已知抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f93f4e10d9672fa6bd67243bc23d4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc8636f15e947d0cb510b87903a429f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0f7eb99327cfa0971249c216f4fb207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f93f4e10d9672fa6bd67243bc23d4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0f7eb99327cfa0971249c216f4fb207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5627dee61ff1a179ed56a7e627927448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0f7eb99327cfa0971249c216f4fb207.png)
(3)若抛物
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c797f3762bea35c1632fe9971765ee8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c85780ed2f7926ca8d40d1da14df8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
您最近一年使用:0次