名校
1 . 某公园要建造如图所示的绿地
,
、
为互相垂直的墙体,已有材料可建成的围栏
与
的总长度为
米,且
.设
(
).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/936e7827-b1f8-4979-b391-a7dfdce02b0a.png?resizew=156)
(1)当
,
时,求
的长;(结果精确到
米)
(2)当
时,求
面积
的最大值及此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e63af3d182fd7bfe75f26a520641c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d7c066118e34f069f2927f3c2ceb4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65b6c42393fae47c51101713167ff71.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/936e7827-b1f8-4979-b391-a7dfdce02b0a.png?resizew=156)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e2c8d466ab8eb5ecd38060b53bbe8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87796ee30e6c5d5e6b6285b32abe10c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2022-06-23更新
|
1005次组卷
|
7卷引用:上海市黄浦区2022届高考二模数学试题
上海市黄浦区2022届高考二模数学试题(已下线)第06讲 任意角三角函数、诱导公式及恒等式-3(已下线)2023年上海高考数学模拟卷01上海市市北中学2023届高三上学期10月月考数学试题上海市市西中学2023届高三上学期期中数学试题(已下线)拓展三:三角形面积(定值,最值,范围)问题(精讲)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)河北省高碑店市崇德实验中学2022-2023学年高一下学期期中数学试题
2 . 现有半径为
、圆心角
为
的扇形材料,要裁剪出一个五边形工件
,如图所示.其中
分别在
上,
在
上,且
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8418bdd158ba514f21b9c8d1c70afd07.png)
.记
,五边形
的面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/11005023-a255-4daa-8775-186079e8a284.png?resizew=196)
(1)试求
关于
的函数关系式;
(2)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38a0437949dfd24d0447d18f6f14a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f984edb99e0e68badcd405b765b32e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf2e3236ea30ee2c37928b98041f13a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c26ffd8c142d557b077e2ae4bf0b6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8418bdd158ba514f21b9c8d1c70afd07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f1c2614cf1c36fc4849267d39375e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dbe4753aa1471d398b8b5b24db422ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f984edb99e0e68badcd405b765b32e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/11005023-a255-4daa-8775-186079e8a284.png?resizew=196)
(1)试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e0a8b3655a26fa96361ebe312a34e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e0a8b3655a26fa96361ebe312a34e4.png)
您最近一年使用:0次
2020-01-10更新
|
232次组卷
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2卷引用:上海市黄浦区2016-2017学年高三上学期期终调研测试数学试题