如图,二次函数
的图象与
轴交于
,
,与
轴交于点
.
(1)求该二次函数的解析式及点
的坐标;
(2)如图1,点
为抛物线
段一动点,
于点
,
轴交
于点
,当
的长度最大时,求点
的坐标.
(3)点
为抛物线上一点,过
作
轴交直线
于点
,点
为
轴上一点,点
为坐标系内一点,当以点
,
,
,
为顶点的四边形是正方形时,直接写出点
的坐标.
![](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/241ce9bd28046ce9b90f43b391132884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f05b013e4b7166cbc87c5a83d6a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求该二次函数的解析式及点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b154270249b0ef54ddb26137b2681a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19ea2bb6a8408a6507c42e910895c28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)点
![](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/7ed5952451c4f7e32ecccc9cd5996ffe.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/2a30f3a8b673cc28bd90c50cf1a35281.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2020/10/29/2581697878163456/2585199960793088/STEM/c4d6acaf-7516-43f5-8a10-1b9f910afd61.png?resizew=272)
更新时间:2020-11-03 21:45:41
|
相似题推荐
解答题-问答题
|
困难
(0.15)
名校
【推荐1】已知:抛物线
交
轴于点
、
两点
左
右
,交
轴正半轴于点
,
.
![](https://img.xkw.com/dksih/QBM/2022/12/3/3122752951418880/3127022242299904/STEM/3dfd096461824ac988cba619b9b27be0.png?resizew=527)
(1)如图
,求抛物线的解析式;
(2)如图
,
是第一象限抛物线上一点,连接
、
、
,设点
的横坐标为
,
的面积为
,求
与
之间的函数关系式
不要求写出自变量的取值范围
;
(3)如图
,在(2)的条件下,连接
与
轴交于点
,过点
作
轴的平行线交抛物线于点
,点
为线段
延长线上一点,连接
、
,若
,
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9eeeaf4f5e8b0d80ac3b221db06b8b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db7bd6f151534875f9602ca245c8f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c8dbc31b2e14067ef2f34b4e25f114.png)
![](https://img.xkw.com/dksih/QBM/2022/12/3/3122752951418880/3127022242299904/STEM/3dfd096461824ac988cba619b9b27be0.png?resizew=527)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9880952857950577055578875ab29141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.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/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](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/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.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/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289d7a880379d6060065c829b45b0ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55eab23c2494d9c4da78097f17cf5395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8224ff3140625f49991e43acad220e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】如图,二次函数y=x2+bx+c的图象与x轴交于A(﹣1,0)、B(3,0)两点,与y轴交于点C.
![](https://img.xkw.com/dksih/QBM/2022/2/27/2925665789288448/2934496028721152/STEM/bb0605211b05422aa5fd0ad890f09c18.png?resizew=223)
(1)求二次函数的表达式;
(2)若点D为抛物线对称轴上一动点,当△BCD是直角三角形时,请直接写出点D的坐标;
(3)若点E(m,n)为抛物线上的一个动点,将点E绕原点O旋转180°得到点F.
①当点F落在该抛物线上时,求m的值;
②当点F落在第二象限内且AF取得最小值时,求m的值.
![](https://img.xkw.com/dksih/QBM/2022/2/27/2925665789288448/2934496028721152/STEM/bb0605211b05422aa5fd0ad890f09c18.png?resizew=223)
(1)求二次函数的表达式;
(2)若点D为抛物线对称轴上一动点,当△BCD是直角三角形时,请直接写出点D的坐标;
(3)若点E(m,n)为抛物线上的一个动点,将点E绕原点O旋转180°得到点F.
①当点F落在该抛物线上时,求m的值;
②当点F落在第二象限内且AF取得最小值时,求m的值.
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐3】已知点P是二次函数
图像的顶点.
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974211045376000/2976328343871488/STEM/b177ea82-7e80-4dfb-a830-a575d3c9377b.png?resizew=284)
(1)小明发现,对m取不同的值时,点P的位置也不同,但是这些点都在某一个函数的图像上,请协助小明完成对这个函数的表达式的探究:
①将下表填写完整:
②描出表格中的五个点,猜想这些点在哪个函数的图像上?求出这个图像对应的函数表达式,并加以验证,
(2)若过点(0,2),且平行于x轴的直线与
的图像有两个交点A和B,与②中得到的函数的图像有两个交点C和D,当
时,直接写出m的值等于________;
(3)若
,点Q在二次函数
的图像上,横坐标为m,点E在②中得到的函数的图像上,当
时,求出E点的横坐标(用含m的代数式表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da69721e751bd0cd6d54edd018dc316.png)
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974211045376000/2976328343871488/STEM/b177ea82-7e80-4dfb-a830-a575d3c9377b.png?resizew=284)
(1)小明发现,对m取不同的值时,点P的位置也不同,但是这些点都在某一个函数的图像上,请协助小明完成对这个函数的表达式的探究:
①将下表填写完整:
m | -1 | 0 | 1 | 2 | 3 |
P点坐标 | ![]() | ![]() | _________ | ________ | ________ |
(2)若过点(0,2),且平行于x轴的直线与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da69721e751bd0cd6d54edd018dc316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ac49ab7c8001c209b8611b9ea40d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da69721e751bd0cd6d54edd018dc316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc250adeb96d1a71e3171f7c857a2789.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①抛物线y=﹣x2+(m﹣1)x+m与直线y=kx+k交于点A、B,其中A点在x轴上,它们与y轴交点分别为C和D,P为抛物线的顶点,且点P纵坐标为4,抛物线的对称轴交直线于点Q.
(1)试用含k的代数式表示点Q、点B的坐标.
(2)连接PC,若四边形CDQP的内部(包括边界和顶点)只有4个横坐标、纵坐标均为整数的点,求k的取值范围.
(3)如图②,四边形CDQP为平行四边形时,
①求k的值;
②E、F为线段DB上的点(含端点),横坐标分别为a,a+n(n为正整数),EG∥y轴交抛物线于点G.问是否存在正整数n,使满足tan∠EGF
的点E有两个?若存在,求出n;若不存在说明理由.
(1)试用含k的代数式表示点Q、点B的坐标.
(2)连接PC,若四边形CDQP的内部(包括边界和顶点)只有4个横坐标、纵坐标均为整数的点,求k的取值范围.
(3)如图②,四边形CDQP为平行四边形时,
①求k的值;
②E、F为线段DB上的点(含端点),横坐标分别为a,a+n(n为正整数),EG∥y轴交抛物线于点G.问是否存在正整数n,使满足tan∠EGF
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c70c0c5a061195b9941796b6a9acc4.png)
![](https://img.xkw.com/dksih/QBM/2020/3/26/2428048593510400/2432817221943296/STEM/169a5affdd20449fb30398a57b643f60.png?resizew=408)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】已知:在平面直角坐标系
中,直线
分别交
轴于点
两点,点
在
轴正半轴上,
.
如图1,求直线
的解析式;
![](https://img.xkw.com/dksih/QBM/2019/4/16/2183699989307392/2183840078020608/STEM/c31569b299f3470e8faeb96904bb1f94.png?resizew=179)
如图2,点
为第一象限内一点,
,
交
于点
,过点
作
交
于点
,过点
作
交
延长线于点
,求
的值;
![](https://img.xkw.com/dksih/QBM/2019/4/16/2183699989307392/2183840078020608/STEM/3c9f2741359847acaa279cfa2968d13a.png?resizew=202)
如图3,在
的条件下,连接
平分
交
于点
,点
为中点
,连接
,点
在
轴正半轴上,连接
,并延长
交直线
于点
,若,
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff84a268907123485c17388f7f7e9463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.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/cef0171d48b69cb171837ec11a39908c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2019/4/16/2183699989307392/2183840078020608/STEM/c31569b299f3470e8faeb96904bb1f94.png?resizew=179)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4c0122aeefeaf1b75ce0b7062216df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13bd9e8b54864ca44115d24a5aeeb83c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b731c2724383ea2a4432ef5ef06caf8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0239954fce89d3267a710f98907a292a.png)
![](https://img.xkw.com/dksih/QBM/2019/4/16/2183699989307392/2183840078020608/STEM/3c9f2741359847acaa279cfa2968d13a.png?resizew=202)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62295c36d2e2174908c2bec0eb5b30f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa37896693b4aedd808e38849d68cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31de4a7e81ee63dbc6e9d601acf4fe1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e5f736b1195fef1d2d300168a795f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb53c581b1bb6f6eac33f0afac2392f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://img.xkw.com/dksih/QBM/2019/4/16/2183699989307392/2183840078020608/STEM/675b4b8a9a5c47d9b6eaaec850f66ec7.png?resizew=224)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐1】如图,已知抛物线
与
轴交于
,
两点(
点位于
点左侧),与
轴交于
点,连接
.点
为抛物线的顶点,点
为
.
(1)点
是第四象限内抛物线上的一点,过点
作
轴交抛物线于点
,作
轴于点
,作
轴于点
,点
在点
右边.点
是直线
上一个动点,点
是直线
上一个动点,当四边形
的周长最大时,求
的最小值;
(2)如图2,将原抛物线绕其对称轴与
轴的交点
旋转
得新的抛物线
,点
,
的对应点分别记为
,
,把抛物线
沿直线
平移,
,
的对应点分别记为
,
是否存在点
,使得
是以
为腰的等腰三角形?若存在,请直接写出
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01f388fba84f60e5e3b3dd7b04306eb.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec40ff4479edca2ed18b6cadb8db72f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/bd3bdc5b-f19d-45f7-a361-2e2e45b98f61.png?resizew=499)
(1)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/c92d97e1136fe9f48fcd5c8bbdc2dbe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b1da9046b4cb82135a4a1eaa528c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d84acd3c96e20c0ce064aac125f7fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f107bd06ad6af2ff8d5aaa9ace12d9a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ddeb7ce17137144641f061042c14fb.png)
(2)如图2,将原抛物线绕其对称轴与
![](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/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b633158f7d9c35d476a324a683f458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae863e7a1f1fed09f1075de4a817c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e62111c5c2f7551a7aa7ebb9da952e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e423cacaad9bf4b26ce49536c9787c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】已知,如图,二次函数y=﹣x2+bx+c的图象经过点A(﹣1,0),B(3,0),点E为二次函数第一象限内抛物线上一动点,EH⊥x轴于点H,交直线BC于点F,以EF为直径的圆⊙M与BC交于点R.
(1)求这个二次函数关系式.
(2)当△EFR周长最大时.
①求此时点E点坐标及△EFR周长.
②点P为⊙M上一动点,连接BP,点Q为BP的中点,连接HQ,求HQ的最大值.
(1)求这个二次函数关系式.
(2)当△EFR周长最大时.
①求此时点E点坐标及△EFR周长.
②点P为⊙M上一动点,连接BP,点Q为BP的中点,连接HQ,求HQ的最大值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/2/71e3b4a8-6810-470f-b3d9-60c9c4da2267.png?resizew=181)
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
交x轴于A、B两点(点A在点B左侧),交y轴于点C,一次函数y=kx+b(k≠0)与抛物线交于B、D两点,已知cos∠ABD=
.
![](https://img.xkw.com/dksih/QBM/2022/3/21/2940856386977792/2957285985837056/STEM/f3d68524-00e7-42b8-b464-351785679930.png?resizew=430)
(1)求点D的坐标;
(2)点F是抛物线的顶点,连接BF.P是抛物线上F、D两点之间的任意一点,过点P作PE∥BF交BD于点E,连接PF、PD、FE.求四边形PFED面积的最大值及相应的点P的坐标;
(3)连接AC,将抛物线沿射线AC方向平移
个单位长度得到新抛物线y',新抛物线与原抛物线交于点G.S是原抛物线对称轴上一点,T是平面内任意一点,G、S、A、T四点能否构成以AS为边的菱形?若能,请直接写出点T的坐标;若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117c9e031f8bc140d18f27963595729e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
![](https://img.xkw.com/dksih/QBM/2022/3/21/2940856386977792/2957285985837056/STEM/f3d68524-00e7-42b8-b464-351785679930.png?resizew=430)
(1)求点D的坐标;
(2)点F是抛物线的顶点,连接BF.P是抛物线上F、D两点之间的任意一点,过点P作PE∥BF交BD于点E,连接PF、PD、FE.求四边形PFED面积的最大值及相应的点P的坐标;
(3)连接AC,将抛物线沿射线AC方向平移
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b947152b672cf56e5a8cde6800d71c0.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】如图1,二次函数y=
x2+bx-4的图象与x轴交于A(3,0)、B两点,与y轴交于点C.若点P,Q同时从A点出发,都以每秒1个单位长度的速度分别沿线段AB,AC运动,其中一点到达端点时,另一点也随之停止运动.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/9eaeced7-ea8b-48aa-8a16-84cc5cfed0b3.png?resizew=416)
(1)求该二次函数的解析式和点C的坐标;
(2)如图2,当点P、O同时运动
秒时,停止运动,这时在抛物线对称轴上是否存在点E,使得以A,E,Q为顶点的三角形为等腰三角形?若存在,请求出点E的坐标;若不存在,请说明理由;
(3)如图3,当P、Q运动t秒时,把△APQ沿PQ翻折,点A恰好落在抛物线上点D处,请判定此时四边形APDQ的形状,简要说明理由,并求出此时t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/9eaeced7-ea8b-48aa-8a16-84cc5cfed0b3.png?resizew=416)
(1)求该二次函数的解析式和点C的坐标;
(2)如图2,当点P、O同时运动
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
(3)如图3,当P、Q运动t秒时,把△APQ沿PQ翻折,点A恰好落在抛物线上点D处,请判定此时四边形APDQ的形状,简要说明理由,并求出此时t的值.
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐3】如图,抛物线y=ax2+bx+c(a≠0)的图象经过A(1,0),B(3,0),C(0,6)三点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/19/37e45b01-a3ba-41d2-95b9-b9cf98db04f6.png?resizew=131)
(1)求抛物线的解析式.
(2)抛物线的顶点M与对称轴l上的点N关于x轴对称,直线AN交抛物线于点D,直线BE交AD于点E,若直线BE将△ABD的面积分为1:2两部分,求点E的坐标.
(3)P为抛物线上的一动点,Q为对称轴上动点,抛物线上是否存在一点P,使A、D、P、Q为顶点的四边形为平行四边形?若存在,求出点P的坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/19/37e45b01-a3ba-41d2-95b9-b9cf98db04f6.png?resizew=131)
(1)求抛物线的解析式.
(2)抛物线的顶点M与对称轴l上的点N关于x轴对称,直线AN交抛物线于点D,直线BE交AD于点E,若直线BE将△ABD的面积分为1:2两部分,求点E的坐标.
(3)P为抛物线上的一动点,Q为对称轴上动点,抛物线上是否存在一点P,使A、D、P、Q为顶点的四边形为平行四边形?若存在,求出点P的坐标;若不存在,请说明理由.
您最近一年使用:0次