1 . 如图,抛物线
与x轴交于A,B两点,与y轴交于点C,若点P是线段
上方的抛物线上一动点,当
的面积取得最大值时,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1898ead1b42c7a17f068869ee3e49e40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147de24f071e316b68fd2e78e3c84545.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/7/54d39d3a-ded3-40f4-8a6a-79ae3cc53792.png?resizew=201)
您最近一年使用:0次
名校
2 . 如图,四边形
中,
,若
,则四边形
的面积最大值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/8549770a-8849-4506-a15c-3e192354a5bd.png?resizew=104)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f42eee31dc5290a7f970009dabef820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/8549770a-8849-4506-a15c-3e192354a5bd.png?resizew=104)
A.4 | B.6 | C.8 | D.10 |
您最近一年使用:0次
2023-10-30更新
|
115次组卷
|
6卷引用:江苏省盐城市射阳县射阳外国语学校2022-2023学年八年级下学期期中数学试题
江苏省盐城市射阳县射阳外国语学校2022-2023学年八年级下学期期中数学试题广西壮族自治区河池市2022-2023学年九年级上学期期末数学试题广西壮族自治区河池市宜州区2022-2023学年九年级上学期期末数学试题广西壮族自治区钦州市浦北县浦北中学2023-2024学年九年级上学期9月月考数学试题福建省漳州市华安县第一中学2023-2024学年九年级上学期月考数学试题(已下线)专题14 二次函数的应用及二次函数与一元二次方程(十种考法)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(北师大版)
名校
3 . 如图,锐角
中,
,
边上的高
,矩形
的边
在
上,其余两点E、F分别在
、
上,且
交
于点K.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/dd29f9f1-5f27-49f7-8ff3-1137d77c651e.png?resizew=186)
(1)求
的值;
(2)设
,矩形
的面积为S.
①求S与x的函数关系式;
②请直接写出S的最大值为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/dd29f9f1-5f27-49f7-8ff3-1137d77c651e.png?resizew=186)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f660bc97084ac6fe80c893708919bb4.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45321df06ac830383be37e07e3be533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
①求S与x的函数关系式;
②请直接写出S的最大值为 .
您最近一年使用:0次
4 . 如图,已知平行四边形
中,
,
,以
为直径的圆经过点C,Q为线段
上任一点(与点O、点C不重合),过点
作直线
垂直于
于
,交直线
于P,设
,
的面积为
.以下结论其中正确的是( )
①点B的坐标是
;
②直线
的解析式是:
;
③S与t的函数关系式是:
;
④当
时,直线
与已知圆相切.
![](https://img.xkw.com/dksih/QBM/2023/9/25/3332494527201280/3455753020465152/STEM/5e5d3f2de55c4bf08fccac5abaa5b9dc.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434845564fd5765244f8d1aa9240fa39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01027f31797b6965bf2e8b52ab53a53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd76e6d65f760566a9ace9b0dc28168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
①点B的坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2e3f843b444e3102443dac509b2b78.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c5361d3a779bf1f25234e675f91de1.png)
③S与t的函数关系式是:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dfea501f686d8457ba958740e9923d4.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47244e29bcce31eea0f6292adf577add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/2023/9/25/3332494527201280/3455753020465152/STEM/5e5d3f2de55c4bf08fccac5abaa5b9dc.png?resizew=199)
A.②③ | B.②③④ | C.③④ | D.①②③④ |
您最近一年使用:0次
5 . 如图抛物线
与
轴交于点A,
,与
轴交于点
,过点
作
轴交抛物线的对称轴于点
,连接
,点A的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/24/ef312ab1-2134-4593-beb7-d5f900436ab3.png?resizew=178)
(1)求该抛物线的解析式;
(2)当
时,
的取值范围是多少?
(3)求梯形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699b6c7253fbfb1202ec6abb90b91d8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d6eb67e32034c7c7312d6442e5ef40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/24/ef312ab1-2134-4593-beb7-d5f900436ab3.png?resizew=178)
(1)求该抛物线的解析式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120b6dab105ef5caf08a9fffeb8d6e55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)求梯形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fdb48aaf0f4a2451390d27fb5f510a.png)
您最近一年使用:0次
2023-10-22更新
|
90次组卷
|
2卷引用:江苏省徐州市云龙区撷秀初级中学2023-2024学年九年级上学期期中数学模拟试题
6 . 如图,在平面直角坐标系中,抛物线
与x轴交于点A,B点A在点B的左侧),与y轴交于点D,已知点C的坐标为
,请仅用无刻度的直尺按要求完成以下作图.
(1)在图1中作以
为斜边的等腰直角三角形.
(2)如图2,
,E是抛物线上的一点,作以
对角线的正方形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3acfb762b09d43518361278cab1b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d06d31c9a2298b02664a86ddd91b1121.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/24/a23d35f3-c130-4045-8e81-e21aed5e89ec.png?resizew=279)
(1)在图1中作以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28971fe3e3f9d3849400e98b46fc3ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
名校
7 . 某家禽养殖场,用总长为
的围栏靠墙(墙长为
)围成如图所示的三块矩形区域,矩形
与矩形
面积都等于矩形
面积的一半.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/d6b43f4d-8929-4bde-b463-45c70d68b9e9.png?resizew=158)
(1)求当
为何值时,矩形区域
的面积为
:
(2)矩形区域
的面积可能为
吗?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba52ced0811df98fedb575535b24257b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6d690befd9571e1cf9a80388ab2b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474fa6f237d904bf46238e4fe3a59d8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4923385f9ef2e9e3b4df8ca62579e634.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/d6b43f4d-8929-4bde-b463-45c70d68b9e9.png?resizew=158)
(1)求当
![](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/918e0fcb0ad788589cc3acab37d0e308.png)
(2)矩形区域
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52be556e7fa0d2a9b8abafed2b061af5.png)
您最近一年使用:0次
2023-10-18更新
|
169次组卷
|
4卷引用:江苏省南京市第二十九中学2023-2024学年九年级上学期第一次月考数学试题
名校
8 . 李叔叔为了充分利用现有资源,计划用一块矩形空地种植两种蔬菜,如图,矩形
的一面靠墙(墙的长度为
).另外三面用栅栏围成,中间再用栅栏
把它分成两个矩形,已知栅栏的总长度为
,若
,矩形
的面积为
,则
关于
的函数表达式及
的取值范围正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e978c77cb0d7eff794447241e9829867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da70a5f846c801d55d595059463f519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3828d7db00fce0c9f2386a91fa925d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a20728e9a9e3018723f2a86f24f332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/17/324c7fb4-2166-44fc-b6b6-e3ab01d330a4.png?resizew=164)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
9 . 如图,老李想用长为
的栅栏,再借助房屋的外墙(外墙足够长)围成一个矩形羊圈
,并在边
上留一个
宽的门(建在
处,另用其他材料).
(1)当羊圈的长和宽分别为多少米时,能围成一个面积为
的羊圈?
(2)羊圈的面积能达到
吗?如果能,请你给出设计方案;如果不能,请说明理由.
(3)如何围成一个面积最大的矩形羊圈,求此时
为多少米?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d112c9693aa126c92bf1402a1f66bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71a41641aa0d0e45a3c03d3d2c1196b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/18/83cfa894-63f0-4641-be57-9e6a71521e7e.png?resizew=189)
(1)当羊圈的长和宽分别为多少米时,能围成一个面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46a624ca5623fc427f6055b6185f7cd.png)
(2)羊圈的面积能达到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448a73dfd68d0eb6f5520aadc37a866f.png)
(3)如何围成一个面积最大的矩形羊圈,求此时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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10 . 用总长为20米的围栏材料,一面靠墙,围成一个矩形花圃,若花圃垂直于墙的一边长为x米,花圃的面积为y平方米,求y与x之间的函数关系式.
您最近一年使用:0次
2023-10-14更新
|
80次组卷
|
4卷引用:九年级数学期末真题【考题猜想,常考110题50个考点专练】-2023-2024学年九年级数学上学期期末考点大串讲(苏科版)
(已下线)九年级数学期末真题【考题猜想,常考110题50个考点专练】-2023-2024学年九年级数学上学期期末考点大串讲(苏科版)吉林省长春市长春经济技术开发区2022-2023学年九年级上学期期末数学试题(已下线)专题14 二次函数的应用及二次函数与一元二次方程(十种考法)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(北师大版)(已下线)清单02二次函数(14个考点梳理+题型解读+核心素养提升+中考聚焦)-2023-2024学年九年级数学上学期期末考点大串讲(人教版)