如图,抛物线
经过点
,
.请解答下列问题:
![](https://img.xkw.com/dksih/QBM/2022/11/30/3120934375358464/3131604365598720/STEM/de19e69709564aacb6ceee7a966f949f.png?resizew=90)
(1)求抛物线的解析式;
(2)点
在抛物线上,抛物线的对称轴与x轴交于点H,点F是AE中点,连接FH,求线段FH的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.png)
![](https://img.xkw.com/dksih/QBM/2022/11/30/3120934375358464/3131604365598720/STEM/de19e69709564aacb6ceee7a966f949f.png?resizew=90)
(1)求抛物线的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6ab68783bd82cfc2e36af15e3af00f.png)
更新时间:2022-12-15 21:28:18
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【推荐1】已知二次函数y=x2﹣2(m+1)x+3﹣m,其中m是常数.
(1)若函数的图象经过点(﹣1,8),求此函数的解析式.
(2)当x≤2时,y随x的增大而减小,求m的最小值.
(3)当﹣1≤x≤2时,若二次函数图象始终在直线y=3的上方,请直接写出m的取值范围.
(1)若函数的图象经过点(﹣1,8),求此函数的解析式.
(2)当x≤2时,y随x的增大而减小,求m的最小值.
(3)当﹣1≤x≤2时,若二次函数图象始终在直线y=3的上方,请直接写出m的取值范围.
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【推荐2】如图,已知抛物线
经过
,
两点,直线
是抛物线的对称轴.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/88bc93e8-ca1d-48b6-ac00-4f6692d46093.png?resizew=123)
(1)求抛物线的解析式.
(2)设
是直线
上的一个动点,当点
到点
,
的距离之和最短时,求点
的坐标.
(3)已知
为抛物线的顶点,在平面直角坐标系中是否存在一点
,恰好使得
,
,
,
为顶点平行四边形,若存在,写出所有符合条件的
点坐标,并写出求解点
的坐标的其中一种情况的过程,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3892968d89c539a1398dd41f31b412e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b5288ad85ce1ff24d0b4053a4869ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/88bc93e8-ca1d-48b6-ac00-4f6692d46093.png?resizew=123)
(1)求抛物线的解析式.
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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【推荐1】如图,反比例函数
的图象与正比例函数
的图象相交于点
,
.
______,
______,点
坐标为______.
(2)不等式
的解集是______.
(3)已知
轴,以
,
为边作菱形
,求菱形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7385795d7eab9691e21172c51a97428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73ac1756e6cc3266bd7198a024f871af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388e6c7ad60e589bdb16b70fefdd617b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9f22258b53e8cef4764a17f4f43b24b.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc195a9f7ac138e5a1ad87d5fa201c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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名校
【推荐2】【问题发现与证明】
如图
,四边形
是正方形,
,
分别在边
、
上,且
,我们把这种模型称为“半角模型”,在解决“半角模型”问题时,“截长补短”是常用的方法之一
在图
中,连接
,为了证明结论“
”,小亮延长
到
,使
解答了这个问题,请按小亮的思路写出证明过程;
【问题拓展与应用】
如图
,正方形
的边长为
,点
,
分别在
,
上,若
,
,求
的长.
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192155e6a3aade305b76b1eb7c75e30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9af98a1a048b1e2f7c71e83c33498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e9f8f8598ffafaf6168f64799c8b9b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/cdba5932-6ebc-4b56-8513-a079379d4d78.png?resizew=504)
【问题拓展与应用】
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06aed4375003b36ec24b691d03c85442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192155e6a3aade305b76b1eb7c75e30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
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【推荐1】如图,菱形
中,分别延长
,
至点
,
,使
,
,连接
,
,
,
.
(1)求证:四边形
是矩形;
(2)若
,
,求矩形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/3b1d267eeb09c171c3e847f0597be31c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3b0b5010813ccc388a41ba74f3b932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/ebf590c7-4ad9-49cf-be85-ad792e156a8a.png?resizew=176)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc50ecfa45216f8d098662452cf8d08.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc50ecfa45216f8d098662452cf8d08.png)
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【推荐2】在矩形ABCD中,
,E、F是对角线AC上的两个动点,分别从A、C同时出发相向而行,速度均为每秒1个单位长度,运动时间为t秒,其中
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/24/9104d28b-d39e-4aff-9187-b325855812c5.png?resizew=213)
(1)若G、H分别是AD、BC的中点,则下列关于四边形EGFH(E、F相遇时除外)的判断:①一定是平行四边形;②一定是矩形;③一定是菱形,正确的是______;(直接填序号,不用说理)
(2)在(1)的条件下,若四边形EGFH为矩形,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f1844834ef0315a704d8e2fba77544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443e30092441f6cabe71a67c60ee733c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/24/9104d28b-d39e-4aff-9187-b325855812c5.png?resizew=213)
(1)若G、H分别是AD、BC的中点,则下列关于四边形EGFH(E、F相遇时除外)的判断:①一定是平行四边形;②一定是矩形;③一定是菱形,正确的是______;(直接填序号,不用说理)
(2)在(1)的条件下,若四边形EGFH为矩形,求t的值.
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