名校
1 . 在美化校园的活动中,某兴趣小组借助如图所示的直角墙角(墙角两边
和
足够长),用
长的篱笆围成一个矩形花园
(篱笆只围
和
两边),设
,则
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/c71d65fa-f7b9-4ec9-a859-4d34df5cade6.png?resizew=178)
(1)求y与x之间的关系式,并写出自变量的取值范围;
(2)当矩形花园的面积为
时,求
的长;
(3)如果在点P处有一棵树(不考虑粗细),它与墙
和
的距离分别是
和
,如果要将这棵树围在矩形花园内部(含边界),直接写出矩形花园面积的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf2fc57da7f8399eae9ad9ad22ca836.png)
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ac400e3f5ba8b945bbef83db8611b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7c97d39a48ae7c872bcef302908273e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/c71d65fa-f7b9-4ec9-a859-4d34df5cade6.png?resizew=178)
(1)求y与x之间的关系式,并写出自变量的取值范围;
(2)当矩形花园的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9f07fd81681b240503736245b294e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)如果在点P处有一棵树(不考虑粗细),它与墙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b749f9acb5f0de709a1709bbdd42614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e17ee14bd91bfff409c06fd434f6745.png)
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2 . 如图,有长为的篱笆,一边利用墙(墙长不限),则围成的花圃
的面积最大为
.
您最近一年使用:0次
2024-01-07更新
|
109次组卷
|
2卷引用:浙江省杭州市2023-2024学年九年级上学期期中数学试题
名校
3 . 如图1.已知等腰直角三角形
的直角边长与正方形
的边长均为
,
与
在同一条直线上,开始时点
与点
重合,让
向右移动,最后点
与点
重合,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/24768989-45ea-42a0-b1ea-2a25feffd8c5.png?resizew=385)
(1)写出两图形重叠部分的面积
与线段
的长度
之间的函数关系式;并写出自变量
的取值范围;
(2)请在如图2所示的坐标系中画出此函数的图象,并结合图象指出重叠部分面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/24768989-45ea-42a0-b1ea-2a25feffd8c5.png?resizew=385)
(1)写出两图形重叠部分的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc2a4e63b6c16037d8c2dde9ecec5aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be6e964c405a9cdf6623f9219898fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)请在如图2所示的坐标系中画出此函数的图象,并结合图象指出重叠部分面积的最大值.
您最近一年使用:0次
4 . 如图,抛物线
与
轴交于点
、
,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/c165c024-bc5f-4b17-a30f-b5560ae0cfac.png?resizew=140)
(1)求抛物线的表达式.
(2)已知点
为
轴上一点,点
关于直线
的对称点为
.
①当点
刚好落在第二象限的抛物线上时,求出点
的坐标.
②点
在抛物线上(点
不与点
、点
重合),连接
,
,
,是否存在点
,使
为等腰直角三角形?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/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c33700c3358cbbd8db376f9f0613b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbb898663f98b8400a897913b4d3102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/c165c024-bc5f-4b17-a30f-b5560ae0cfac.png?resizew=140)
(1)求抛物线的表达式.
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
②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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79039b211d151710a15fc9dda11d6225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba2d49042c812a164167a8e42fde290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2024-01-05更新
|
133次组卷
|
2卷引用:浙江省温州市新希望联盟2023-2024学年九年级上学期期中数学试题
5 . 庆城中学课外兴趣活动小组准备围建一个矩形苗圃园,其中一边靠墙,另外三边用长为
米的篱笆围成,已知墙长为
米(如图所示),设这个苗圃园垂直于墙的一边的长为
米.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/5a88af1a-422d-4767-a746-0341c41e4010.png?resizew=196)
(1)若苗圃园的面积为
平方米,求
的值;
(2)求这个苗圃园的面积的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53c7539ed297ea63b9ace6f5cc58ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b837fd9c52f60bfb3b6852733abc790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/5a88af1a-422d-4767-a746-0341c41e4010.png?resizew=196)
(1)若苗圃园的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6620729a37129c16cfd61cd59500bfe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求这个苗圃园的面积的最大值
您最近一年使用:0次
6 . 如图,利用
的墙角修建一个梯形ABCD的储料场,其中
,并使
,新建墙
上预留一长为2米的门
.如果新建墙
总长为16米,设
的长为
米.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/10b66c5b-cd08-4e25-b886-6855f7960741.png?resizew=144)
(1)边
的长(x的代数式表示);
(2)当储料场的面积为48平方米时,求边
的长;
(3)怎样修建才能使储料场的面积最大?最大面积多少平方米?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cde7aace5b888a1a1c26fb911e2f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968f24afbb88877f944f749c8339a819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89eb1a7fdf7abca067558c9f41b67f19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/10b66c5b-cd08-4e25-b886-6855f7960741.png?resizew=144)
(1)边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)当储料场的面积为48平方米时,求边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)怎样修建才能使储料场的面积最大?最大面积多少平方米?
您最近一年使用:0次
7 . 如图,四边形
中的两条对角线
,
互相垂直,
,当
长为______ 时,四边形
的面积最大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7712aaf7c0fa135847df6e3a1d547b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/889efe5d-6081-4e5a-9e46-d2002738fbc1.png?resizew=139)
您最近一年使用:0次
2024-01-02更新
|
140次组卷
|
3卷引用:四川省南充市仪陇县2023-2024学年九年级上学期期中数学试题
8 . 小明用一根8米长的绳子围成一个矩形,设其中一边长为x米(
),矩形的面积为y平方米,解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/6a65a696-ea4b-4c3f-aba2-891733d8d8d0.png?resizew=109)
(1)写出y与x的函数关系式;
(2)小明想围成的矩形面积最大,请你帮他算一算当x是多少时面积最大?最大面积是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afeccf0358c02b53554a0f6d3dc33cbd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/6a65a696-ea4b-4c3f-aba2-891733d8d8d0.png?resizew=109)
(1)写出y与x的函数关系式;
(2)小明想围成的矩形面积最大,请你帮他算一算当x是多少时面积最大?最大面积是多少?
您最近一年使用:0次
9 . 第二十二届中国上海国际艺术节首次移师上海市黄浦区南京东路第一百货商业中心,主办方工作人员准备利用一边靠墙(墙长
米)的空旷场地为提前到场的观众设立面积为
平方米的封闭型长方形等候区.如图,为了方便观众进出,在两边空出两个宽各为
米的出入口,共用 去隔栏绳
米.请问:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/2a818bf0-c1ca-495c-85f8-dfa2b0479cad.jpg?resizew=254)
(1)工作人员围成的这个长方形的相邻两边长分别是多少米?
(2)长方形场地的最大面积是多少平方米?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53c7539ed297ea63b9ace6f5cc58ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/401dddda7c1cc8d59ad3835ceb8093ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6f1af4b44b2e97e8f319bab4ae9010.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/2a818bf0-c1ca-495c-85f8-dfa2b0479cad.jpg?resizew=254)
(1)工作人员围成的这个长方形的相邻两边长分别是多少米?
(2)长方形场地的最大面积是多少平方米?
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10 . 如图,用一根
的铁丝制作一个“日”字型框架
,铁丝恰好全部用完,则该“日”字型框架
面积的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9871f2a312aaf3a19b40e4fb1a7693b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/8aac305d-3dff-4166-bb23-23706151d3f9.png?resizew=123)
A.![]() ![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次