学校外的湿地公园有一形状为半圆形的荷花池.如图所示,为了提升荷花池的观赏性,现计划在池塘的中轴线OC上设计一个观景台
点D与点O,C不重合
,其中AD,BD,CD段建设架空木栈道,已知
,设建设的架空木栈道的总长为y m.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/a222a588-70c5-45a9-9631-a898e3a3a178.png?resizew=180)
(1)设
,将y表示成
的函数关系式,并写出
的取值范围;
(2)试确定观景台的位置,使三段木栈道的总长度最短.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbeb1dbb8fe372dbd390958f853b7412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041cb52f2491fc4d3cb32063d0e116b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/a222a588-70c5-45a9-9631-a898e3a3a178.png?resizew=180)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3309311a612a15fe160f66a9e7460abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)试确定观景台的位置,使三段木栈道的总长度最短.
20-21高二下·重庆南岸·阶段练习 查看更多[5]
四川外语学院重庆第二外国语学校2020-2021学年高二下学期第一次月考数学试题山西省怀仁市第一中学2022届高三上学期第三次月考数学(文)试题(已下线)专题07 导数的综合问题(2)江苏省无锡市江阴市普通高中2023-2024学年高三上学期期初教学质量抽测数学试题(已下线)第04讲 导数在研究函数中的应用-【寒假预科讲义】2024年高二数学寒假精品课(人教A版2019)
更新时间:2021-10-05 21:17:15
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适中
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【推荐1】如图,某小区准备在直角围墙
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(1)①设
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②设
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(1)①设
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②设
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(2)在第一问中,选择一种表示方法,求如何设计,使得围栏
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解答题-问答题
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解题方法
【推荐2】某景区准备设计一景观,其上部是圆锥形的顶棚,如图所示.圆锥顶点为B,底面圆心为O,半径为2米.通过金属杆AB支撑在地面A处(AB垂直于地面),
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(1)当
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的总长.
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(1)当
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(2)当n一定,
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