1 . 把边长为
的正方形硬纸板(如图1),在四个顶点处分别剪掉一个小正方形,折成一个长方体形的无盖盒子(如图2),折纸厚度忽略不计)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/06fc3a33-3a26-48a6-ba7d-197d6243dc13.png?resizew=227)
(1)要使折成的盒子的底面积为
,剪掉的正方形边长应是多少厘米?
(2)折成的长方体盒子侧面积(四个侧面的面积之和)有没有最大值?如果没有,说明理由:如果有,求出这个最大值,并求出此时剪掉的正方形边长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41855ac66963e4774a68d0d32d074242.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/06fc3a33-3a26-48a6-ba7d-197d6243dc13.png?resizew=227)
(1)要使折成的盒子的底面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe773fea412956e9037fa087f1cfc9d0.png)
(2)折成的长方体盒子侧面积(四个侧面的面积之和)有没有最大值?如果没有,说明理由:如果有,求出这个最大值,并求出此时剪掉的正方形边长.
您最近一年使用:0次
2 . 如图,在平面直角坐标系中,抛物线
交x轴于点A、B,交y轴于点C,
.
(1)求抛物线的解析式;
(2)P为第四象限抛物线上的一点,连接
并延长交y轴于点D,设点P的横坐标为t,
的面积为s,求s与t之间的函数关系式(不要求写出t的取值范围);
(3)在(2)的条件下,E为第二象限抛物线上的点,连接
,
,连接
交y轴于点F,若
,在抛物线上找到点G,使
,求点G的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66065ce144d3a12bb53c67d5ed87a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e0c5cb53fd85b7a23f0580df6bb49a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/48a81e89-e2f4-41ea-8d60-9f1dee1ed277.jpg?resizew=413)
(1)求抛物线的解析式;
(2)P为第四象限抛物线上的一点,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
(3)在(2)的条件下,E为第二象限抛物线上的点,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245f13cffbddce02a1f6d18854ce8664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/415422a767b4917ba4c49bef94ef4cd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887a365981c5074233329c5c406cdcf1.png)
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3 . 在
中,边
的长与
边上的高的和为8,当
面积最大时,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
A.4 | B.8 | C.2 | D.无法确定 |
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4 . 如图1,在平面直角坐标系中,O为坐标原点,抛物线
与x轴交于点
,
两点,交y轴于点C.
(1)求抛物线的解析式;
(2)如图2,连接BC,点P为
下方抛物线上一点,连接
,若设
的面积为S,点P的横坐标为t,求s与t的函数关系式(不要求写出自变量t的取值范围);
(3)在(2)的条件下,如图3,点Q为
上一点,连接
并延长交x轴于点E,延长
至点D,连接
交x轴于点M,
,点M为
中点,连接
,点F在
上,连接
,
交
于点K,连接
平分
交
于点H,
交
于点T,
于点G,若
,
,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b77527caa01efcfc28dadcc959af94e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a417116c509111e4e76f5464258ddf2a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/8/25e67e08-f76b-4c07-ad04-e4a9edc0e99b.png?resizew=487)
(1)求抛物线的解析式;
(2)如图2,连接BC,点P为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3298b828ff42990443e8bf33f78b1a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
(3)在(2)的条件下,如图3,点Q为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30513ea48bc1ef3ae78adac83d894f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a09b53ed83b87e40a88c096693543bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766164ce8c0ddfa7267ff0057085dff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a09b53ed83b87e40a88c096693543bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6ee830d05e9becae912818910196fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5613b27531a6593080954b4e3a452b5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90a1e52b81815095ad1bdfb02704af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8684b6c8748bf6716986e9093380b4d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaea4c04cd715dc404b3a911d0a79620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ddcef9a5e5564b852f51740f5e46aba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79ec501bfb40c36dfa57d63c4059536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30401ff2e4b1fcda212fac6893dadd3.png)
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5 . 如图,某养殖场在养殖面积扩建中,准备将总长为78米的篱笆围成矩形
形状的鸡舍,其中
一边利用现有的一段足够长的围墙,其余三边用篱笆,且在与墙平行的一边
上开一个2米宽的门
.设
边长为
米,鸡舍面积为
平方米.
(1)求出
与
的函数关系式;(不需写自变量的取值范围)
(2)当鸡舍的面积为800平方米时,求出鸡舍的一边
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/8/823d15a0-1269-46c8-a397-15ee7bf2634c.png?resizew=152)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当鸡舍的面积为800平方米时,求出鸡舍的一边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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6 . 如图,小明计划利用一面墙(墙长11米)其它三面利用21米篱笆围成一个矩形
.
一侧有一木门,宽1米,若设
,面积为
.
(1)求
与
之间的函数关系,直接写出自变量
的取值范围;
(2)若鸡舍面积为60平方米时,求
的长?
(3)
长多少时,鸡舍面积最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7a3d679b4dae63575903387a76ce45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9dce2b9844a048044786807b34fda6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/31/8237a53f-9ddd-49ee-8ea1-2b51d4ec62e7.png?resizew=166)
(1)求
![](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)
(2)若鸡舍面积为60平方米时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
名校
7 . 如图,在平面直角坐标系中,点
是坐标原点,抛物线
与直线
交于
轴正半轴上的
点,抛物线与
轴的负半轴交于点
,与
轴的负半轴交于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/9630cd7b-4f28-4634-a0ba-5bc5218cb9d7.jpg?resizew=387)
(1)求抛物线的解析式;
(2)点
为抛物线的顶点,连接
,
,若线段
上有一点
,使
,求
的正切值;
(3)在(2)的条件下,在抛物线上存在点
,作
,交直线
于点
,使
.求出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694033aa4e20853cf10f33c870007047.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/af2a988dc9f03fffcd8acb720d706e9c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/9630cd7b-4f28-4634-a0ba-5bc5218cb9d7.jpg?resizew=387)
(1)求抛物线的解析式;
(2)点
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48567584bfd2deb5dd2a484526e5f1ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebf7cc67acfa50ef6b21d9aa379e604a.png)
(3)在(2)的条件下,在抛物线上存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6cc3789c0e9b7d1226aa0de3327599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598b6cb5d2590ab79ad7a319faae7fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
2023-10-27更新
|
91次组卷
|
2卷引用:黑龙江省哈尔滨市道里区光华中学校2023-2024学年九年级上学期09月月考数学试题
8 . 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:黑龙江省大庆市肇源县东部四校2023-2024学年九年级上学期10月月考数学试题
名校
9 . 手工课上,小明准备做一个形状是菱形的风筝,这个菱形的两条对角线长度之和恰好为
,菱形的面积
(单位:
)随其中一条对角线的长
(单位:
)的变化而变化.
(1)请直接写出
与
之间的函数关系式(不要求写出自变量
的取值范围);
(2)当菱形风筝面积为
时,求菱形风筝的边长是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d8789e1f6656c346853f226c08863e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
(1)请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当菱形风筝面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e3c423b144dc231199f265e6a138e8.png)
您最近一年使用:0次
2023-09-04更新
|
128次组卷
|
3卷引用:黑龙江省哈尔滨市南岗区哈尔滨市第四十七中学2023-2024学年九年级上学期开学考试数学试题
10 . 如图,用一段长为
的篱笆围成一个一边靠墙的矩形场地,若墙的最大可利用长度为
,当这块矩形场地的面积最大时,平行于墙的一边长为_________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab5f059b8406993a0d17271b1cb3905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f751f4679c27bc2b4c1e0e56d7f91708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
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4卷引用:黑龙江省大庆市景园中学2023-2024学年九年级上学期月考数学试题
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