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1 . 某公园有一块长方形空地ABCD,如图,
,
.为迎接“五一”观光游,在边界BC上选择中点E,分别在边界AB、CD上取M、N两点,现将三角形地块MEN修建为花圃,并修建观赏小径EM,EN,MN,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/a7ef926e-429b-4c15-b94f-515a293cf4a9.png?resizew=154)
(1)当
时,求花圃的面积;
(2)求观赏小径EM与EN长度和的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb1e3ba0d8f65254f44ca1a34685726.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/a7ef926e-429b-4c15-b94f-515a293cf4a9.png?resizew=154)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d57894299174fdcb815d746b770604.png)
(2)求观赏小径EM与EN长度和的取值范围.
您最近一年使用:0次
2023-04-27更新
|
1195次组卷
|
3卷引用:山东省德州市2022-2023学年高一下学期期中数学试题
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解题方法
2 . 如图,扇形AOB的圆心角为
,半径为1.点P是
上任一点,设
.
,求
的表达式;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa1e67b8e00ff756297f10d7201d015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03401a97b7b97929a136401faee4c2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b461cbe5a345727bc752ef8a063cf7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ebc856291255f2d4a6c20b982a2442.png)
您最近一年使用:0次
2022-07-07更新
|
2464次组卷
|
7卷引用:山东省烟台市招远市招远第一中学2022-2023学年高一下学期期中数学试题