现有一块不规则的场地,其平面图形如图1所示,
(百米),建立如图2所示的平面直角坐标系,将曲线AB看成函数
图象的一部分,BC为一次函数图象的一部分,在此场地上建立一座图书馆,平面图为直角梯形CDEF(如图2).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/2bd17727-43f2-4a7f-b991-3d2a3aa4e494.png?resizew=520)
(1)求折线ABC的函数关系式;
(2)求图书馆CDEF占地面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d3fca5e6f77b21fec454c5f01c7c8ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/2bd17727-43f2-4a7f-b991-3d2a3aa4e494.png?resizew=520)
(1)求折线ABC的函数关系式;
(2)求图书馆CDEF占地面积的最大值.
更新时间:2023-04-14 12:50:03
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【推荐1】已知函数
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(1)求
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(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc8b9907cabe0422aa5e2a7a8211ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204687ff0d957eece42db00f067f15a4.png)
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解题方法
【推荐2】函数的解析式
(1)已知
是二次函数,且
,求f (x).
(2)已知
,求函数
的解析式.
(3)若函数
是奇函数,
是偶函数,且其定义域均为
.若
,求
,
的解析式.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3cf2794dcce30b6e7903ff098a5b8b8.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb1e53281b2185cbc2a9bba06e829f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b876a8b8aa7b726e17ce9a1f6260e1a4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
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【推荐1】已知函数
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(1)求曲线
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(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb0cea3a86abe583bdac4b1b8f146b0.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01dc407d2fee585aa0ad6a1c7b4e9ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f1d4067c34c035d2122570e8347c4b.png)
(2)求函数
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(3)证明:
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【推荐2】在平面直角坐标系
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(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f59e5355f1dd8bd9cb258484833422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45f9186f9a3f6fa6f2f2fc03fc52061.png)
(2)若
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【推荐1】有一块半圆形的空地,直径
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处铺设具有美化效果的灌溉管道,铺设费用为500元/米,两腰
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(1)记花圃的面积为
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(2)若花圃的造价为10元/米²,在花圃的边
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【推荐2】请你设计一个包装盒,如图所示,ABCD是边长为60cm的正方形硬纸片,切去阴影部分所示的四个全等的等腰直角三角形,再沿虚线折起,使得四个点重合于图中的点P,正好形成一个正四棱柱形状的包装盒,E、F在AB上是被切去的等腰直角三角形斜边的两个端点,设AE=FB=x
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【推荐3】如图,有一个长方形地块
,边
为
,
为
.,地块的一角是湿地(图中阴影部分),其边缘线
是以直线
为对称轴,以
为顶点的抛物线的一部分.现要铺设一条过边缘线
上一点
的直线型隔离带
分别在边
上(隔离带不能穿越湿地,且占地面积忽略不计).设点
到边
的距离为
(单位:km),
的面积为
(单位:
).
![](https://img.xkw.com/dksih/QBM/2015/3/24/1572022242369536/1572022248316928/STEM/3c857d2cd29c4c81ba0f2658cfe6ae4b.png?resizew=94)
(1)求
关于
的函数解析式,并指出该函数的定义域;
(2)是否存在点
,使隔离出的
面积
超过
?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39406eabff9d6813cfe904a71a2b0dbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe2e03840cb2f0c7a89cb2b6153c7d9.png)
![](https://img.xkw.com/dksih/QBM/2015/3/24/1572022242369536/1572022248316928/STEM/3c857d2cd29c4c81ba0f2658cfe6ae4b.png?resizew=94)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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