1 . 问题提出
(1)如图①,在
中,
,
,求
的面积.
问题解决
(2)如图②,某公园准备在圆形场地内设计一个四边形娱乐区,图中四边形
为娱乐区的示意图,其中,
是
的直径,
米,点E为直径
上一点,且
米,
是过点E的一条弦.为了给广大市民提供更大范围的娱乐区,试确定娱乐区四边形
的面积是否存在最大值?若存在,求出它的最大面积,若不存在,请说明理由.
(1)如图①,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5cbb92530893433224f0f81abcd07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
问题解决
(2)如图②,某公园准备在圆形场地内设计一个四边形娱乐区,图中四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88b6b9d14dc089d3b86c858d8549adb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ae3fbac48c2555d50bbe404e54500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/3/b329697c-e80a-4afc-9af7-aa8e6346f922.png?resizew=335)
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2 . 问题提出:
(1)如图
,在矩形
中,
,
,
是对角线
上的一点,连接
,将
绕点
逆时针旋转
得到
,过点
作
于
,求
的长.
问题解决:
(2)
年
月我省局部发生疫情,为落实
科学防治、精准施策、分级管理
,我省某小区设计防疫区域,在道路
边固定柱子
点
,道路
边确定一点
,以
为边,搭建正方形防疫区域
,内部道路
上设点
作为记录处,
、
、
、
分别为不同的防疫物资放置区域,设计图简化如图
所示,已知道路两边
,道路宽为
,
为
上一定点,
为
上一动点,
于
.请问是否存在符合设计要求且面积最小的
?若存在,请求出面积最小值及此时
的长;若不存在,请说明理由.
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d527d4795ece4a5756d1cf8dba31e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337421403f59eb20bdc8b446691f8a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a0387fc1258f31e44a10068c0ccfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d9792485ccd1ba479ceba6397c15ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6440bb1f7e8177eeb35c8dc750bef001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1b418d67b301ebfd7db583aa176e28.png)
问题解决:
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb80913fc086c6a264ed476d193e7344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fed15b57f7dcae3668a9dbbaca904af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca7514754bba83b1ee7565391a6b3c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/685f8ab4bdb3b5519efb2afdf34f1d77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3768dceb544862d9d9abae3389ac7236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3007a6f042731a48592a52745c18fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac075d169bb1f8d5e23d74094638b911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d147b156b56dfe1dea9c4d31579d05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8746c4ac693c5b3d38f1748653bd4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7171464030fc3cf64b220d9064bcf39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f11b98257f710958d5fab0de64005f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d147b156b56dfe1dea9c4d31579d05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1741fa3fc1210cb47560c54f501928c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/17/4527bc5b-715b-437d-9236-25eddf69d56b.png?resizew=309)
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3 . 问题背景
在
中,
,点D为边
上一动点,点E为边
上一动点,沿直线
把
翻折,得到
.
问题解决
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/5ba2afb7-9da5-4bc4-9044-e0698b8a2b9a.png?resizew=478)
(1)如图1,当
与B重合时,求线段
的长;
(2)如图2,当
与边
相交于点F,且
时,连接
,
①求五边形
面积的最大值;
②连接
,则
的周长的最小值为 (直接写出答案).
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2522a6965e901bd75bb53113e0c0dfcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34dbf33492e5223df78dea34a24ae015.png)
问题解决
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/5ba2afb7-9da5-4bc4-9044-e0698b8a2b9a.png?resizew=478)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968b886a9f161fdcab1e08cba8ece5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e07ec05313a6eb0f27994f432493fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
①求五边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a621d0ba529307e9df8d2a467af1083.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a037b1a3ec2e37bbcb05d0a467efb511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db121e30b06b467f5d270a1c7d91860e.png)
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4 . 问题提出:
(1)如图①,在四边形
中,
,
,
,点E在线段
上,且
,连接
,作
,交
于点F,求四边形
的面积;
问题解决:
(2)精密仪器厂要生产一种特殊的四边形
金属部件,如图②所示,部件要求是:
,点D到
的距离为
,
,且
.已知生产这种金属部件的材料每平方厘米造价60元,在满足要求和保证质量的前提下,仪器厂希望造价最低,请你帮忙求出一个这种四边形金属部件的最低造价.
(1)如图①,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41aba1711910c6f533cc94319104f4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc89dbda86a8c05e4fb4aa46c642b303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d2231c7a2875ab6d423dff3ead4069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f0805cc7a96c866df10b667ac4851e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
问题解决:
(2)精密仪器厂要生产一种特殊的四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577c09707bdb069cab80860dcc265e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66954cc84b8a54670f6cda18468ec572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8cfd06965af6014208127f2880b476b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3ba8b214034c287276f4966069d95e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/6/8485d3e3-47a6-45fc-a4fe-9dfa93ea6c18.png?resizew=312)
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5 . 问题提出
(1)如图①,
中,点
在边
上,且
,过
作
,交
于点
,若
,则
______;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/ae105c88-827d-4252-aa4f-f7387b11cfee.png?resizew=113)
问题解决
(2)如图②,矩形
中,点
、
分别在边
、
上,且
,过
作
,交
于点
,连接
,交
于点
.若
,
,求
的最大值;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/fc4a2b17-af9e-4bea-ac5c-309c612e45bd.png?resizew=123)
问题探究
(3)如图,正方形
中,点
、
、
、
分别在边
、
、
、
上,且
,
、
相交于点
,
,已知正方形
的边长为16,
长为20,
的面积是否存在最大值?若存在,请求出
的面积的最大值;若不存在,请说明理由.
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/8aa694fa8c2a39f0b9e9abdde51805e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404728d0ea2699c71e674f30dd984abd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/ae105c88-827d-4252-aa4f-f7387b11cfee.png?resizew=113)
问题解决
(2)如图②,矩形
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a336c9ad698d77e7183884523da8a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c05420ab262912cf41f46bc3b0af070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb262f3529a3e84959fe594b6628c77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/fc4a2b17-af9e-4bea-ac5c-309c612e45bd.png?resizew=123)
问题探究
(3)如图,正方形
![](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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c05420ab262912cf41f46bc3b0af070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7946299d2c7bccb8033c29aea0038ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd794a8c6c6c1351a5bb0783a0c40e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd794a8c6c6c1351a5bb0783a0c40e6.png)
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2022-12-30更新
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75次组卷
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2卷引用:陕西省西安交通大学附属中学2022-2023学年九年级上学期第二次月考数学试卷
6 . 如图,在矩形
中,
,
,点E,F,G,H依次是边
,
,
,
上的点(不与各顶点重合),且
,记四边形
面积为S(图中阴影),则S的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1f7373b27d56be8117346793b665dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/d1ccc3f0-a13e-4c0a-91fd-82964a9fb31b.png?resizew=120)
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名校
7 . 现要修建一条隧道,其截面为抛物线型,如图,线段
表示水平的路面,以O为坐标原点,以
所在直线为x轴,以过点O垂直于x轴的直线为y轴,建立平面直角坐标系根据设计要求:
,该抛物线的顶点P到
的距离为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/1e8d5a19-d9a2-42e2-b31f-28f89761e84b.png?resizew=164)
(1)求满足设计要求的抛物线的函数表达式;
(2)现需在这一隧道内壁上安装照明灯,如图,即在该抛物线上的点A、B处分别安装照明灯.已知点A、B到
的距离均为
,求点A、B的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ba0bd88b0b9dc4bd585bde7d0aa090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16864e984978dde0ecac4306a5387edd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/1e8d5a19-d9a2-42e2-b31f-28f89761e84b.png?resizew=164)
(1)求满足设计要求的抛物线的函数表达式;
(2)现需在这一隧道内壁上安装照明灯,如图,即在该抛物线上的点A、B处分别安装照明灯.已知点A、B到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f751f4679c27bc2b4c1e0e56d7f91708.png)
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2022-12-15更新
|
197次组卷
|
4卷引用:陕西省西安市陕西师范大学附属中学2022-2023学年九年级上学期数学12月考考试试题
陕西省西安市陕西师范大学附属中学2022-2023学年九年级上学期数学12月考考试试题陕西省西安市雁塔区陕西师大附属中学2022-2023学年九年级数学上学期第三次月考测试题(已下线)2023年陕西省延安市中考数学第一次模拟考试卷变式题21-26题陕西省西安市陕西师范大学附属中学2022-2023学年九年级上学期第二次月考数学试题
名校
8 . 在颍上县开展的创建文明城市活动中,某居民小区要在一块一边靠墙(墙长
)的空地上修建一个矩形花园
,花园的一边靠墙,另三边用总长为
的栅栏围成(如图所示).若设花园的
边长为
,花园的面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/adfb86f5-24a9-4148-b437-742bc4388371.png?resizew=222)
(1)请用含有
的代数式表示
,并写出
的取值范围:
(2)当
取何值时,花园的面积最大?最大面积为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/146ea9ed5176797da555a70bbe9602c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c758c27bec97c234d1d818c40f3d3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8288df5c66b22fcb3e95d97b7b66f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9dce2b9844a048044786807b34fda6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/adfb86f5-24a9-4148-b437-742bc4388371.png?resizew=222)
(1)请用含有
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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9 . 为了美化环境,学校准备在如图所示的矩形
空地上进行绿化,规划在中间的四边形MNPQ区域里种花,其余的四块三角形上铺设草坪,要求
,已知
米,
米,设
米,种花的面积为
平方米,草坪面积为
平方米.
![](https://img.xkw.com/dksih/QBM/2022/11/25/3117518270038016/3138422885646336/STEM/6af5b846cfc440c297a86818ec8a9a9e.png?resizew=188)
(1)分别求
和
与x之间的函数关系式(不要求写出自变量的取值范围);
(2)当
的长为多少米时,种花的面积为640平方米?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3f99e5035da8598ccb46586f1a7bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c83b688911f105cffe00d6d54eea13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ab84806f1855a6986e23cc1e241296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd7ea6f8961197129f7660d65dd487f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://img.xkw.com/dksih/QBM/2022/11/25/3117518270038016/3138422885646336/STEM/6af5b846cfc440c297a86818ec8a9a9e.png?resizew=188)
(1)分别求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
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10 . 如图,在平面直角坐标系中,抛物线
经过两点A(-1,1),B(2,2).过点B作
轴,交抛物线于点C,交y轴于点D.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/4cbf2e77-d2b4-4189-a527-d2fce187f918.png?resizew=167)
(1)求此抛物线对应的函数解析式及点C的坐标;
(2)若抛物线上存在点M,使得
的面积为
,求出点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53be61cd85ec86aabd164cae0265246b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2146aec59309d1544ece1d028a17e394.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/4cbf2e77-d2b4-4189-a527-d2fce187f918.png?resizew=167)
(1)求此抛物线对应的函数解析式及点C的坐标;
(2)若抛物线上存在点M,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f955e5cc9f108de6f3ca01e5eb84c52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec85f29c0860b57a8f0cf8098c13a97e.png)
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