如图,在海岸线
一侧有一休闲游乐场,游乐场的前一部分边界为曲线段
,该曲线段是函数
的图像,图像的最高点为
.边界的中间部分为长1千米的直线段
,且
.游乐场的后一部分边界是以
为圆心的一段圆弧
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/00d33f77-5f01-4222-ae76-9870b82ff315.png?resizew=283)
(1)曲线段
上的入口
距海岸线
的距离为1千米,现准备从入口
修一条笔直的景观路到
,求景观路
长;
(2)如图,在扇形
区域内建一个平行四边形休闲区
,平行四边形的一边在海岸线
上,一边在半径
上,另外一个顶点
在圆弧
上,且
,求平行四边形休闲区
面积的最大值及此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c593e0320b4fcdfa502752d4b59ef0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884573c939d11e584be3922ed9954ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ea6b5f801158380a615c3f99f615e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c989f9f584fef670cb759e0a83923a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c44512cb86bcf48c6d21357f45b533.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/00d33f77-5f01-4222-ae76-9870b82ff315.png?resizew=283)
(1)曲线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c593e0320b4fcdfa502752d4b59ef0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59faf75f0c95312e556ae905b3ff5b87.png)
(2)如图,在扇形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820567942aa98b2feaaa017fcb7790df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7096e74edfb1830dea70feec95859053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c44512cb86bcf48c6d21357f45b533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a9c9f5ba051622f6cadb384315d3f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7096e74edfb1830dea70feec95859053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
更新时间:2023-03-12 14:04:38
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适中
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解题方法
【推荐1】已知函数
的最大值为2,函数
的图象经过点
,点
与它相邻的一个最低点
的距离为
,如图所示.
![](https://img.xkw.com/dksih/QBM/2022/1/14/2894278190948352/2896625474617344/STEM/08b6b7b63d124126a68591c3e7db8e46.png?resizew=167)
(1)求函数
的解析式;
(2)若函数
,当
时,求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27cd15ee656d39a864fbecf781f23c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e62dfe60e2f098c466a048b982151365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259486552bfab3c97a7c2de0c7cabcc1.png)
![](https://img.xkw.com/dksih/QBM/2022/1/14/2894278190948352/2896625474617344/STEM/08b6b7b63d124126a68591c3e7db8e46.png?resizew=167)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c824db03eb3657a708b8a9f4e54b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d135efe17c653db6169f738711b91bd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
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【推荐2】已知函数
的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/bdca916f-2bcb-41ab-b8e2-0f7300d73c1f.png?resizew=192)
求函数
的解析式,并求出
的单调递增区间:
求出
在
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4d39076312ff7c6e94ce2d89fc5a83.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/bdca916f-2bcb-41ab-b8e2-0f7300d73c1f.png?resizew=192)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dfaecd216156a20f80229dd48a10c80.png)
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【推荐3】已知函数
的部分图象如图所示,其中
、
分别为函数
图象相邻的一个最高点和最低点,其横坐标分别为1和4,且
.
的值,并求函数
的单调增区间;
(2)记
,求函数
,
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6399571d0b2ed4ba1ce3ec686a5d8493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ffe69ab39492e018a51e21b52dd0fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b651c83ed280b34e1144bd7b22dd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b659146043ee17e549578998318b2c12.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec89c3bc454d209007c2b29baeeb3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1116124bdb43a82450edb06fde22e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd520a668471f8bc53b99841d5dad200.png)
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解题方法
【推荐1】在
中,内角A,B,C的对边分别是a,b,c,已知
.
(1)求A的值:
(2)若
,点D在边BC上.且
,求AD的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80902976f7f1ff87e6a779a8870f0731.png)
(1)求A的值:
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b6bef27de230acad352f25e954f4e.png)
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【推荐2】如图所示,经过村庄B有两条夹角为
的公路BA和BC,根据规划拟在两条公路之间的区域内建一工厂F,分别在两条公路边上建两个仓库D和E(异于村庄B),设计要求
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(2)若设
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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d707b346dca9b300e200ed0197429bd.png)
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(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
(2)若设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b0e401b1494eed08fcaae069f9df132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bb3f35e3db7c1f3a3dd3eb20151b5f.png)
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