1 . 如图所示,点
在圆
的一段圆弧
上,设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/cce1bcf8-3153-4c7a-9202-a5e45f241640.png?resizew=169)
(Ⅰ)若
,求
的取值范围;
(Ⅱ)设
,过点
的直线
与
轴垂直交于
点,设曲边多边形
的面积为
;
(ⅰ)求函数
的解析表达式;
(ⅱ)若不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8e47984ce5cb09bae30fe5a552fa2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/cce1bcf8-3153-4c7a-9202-a5e45f241640.png?resizew=169)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960f828b5677e8ba2d50aaddd5833011.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f8f3928d6004e17c7d5f117c9fa393.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e836ea41072fbcf31f6a64318b9aab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373a9b0fef1739b2573e685f37370a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(ⅱ)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abb029a8c7d8db7137568d228183327e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-08-15更新
|
1208次组卷
|
4卷引用:河南名校联盟基础年级联考2019-2020学年高一下学期期末考试数学
河南名校联盟基础年级联考2019-2020学年高一下学期期末考试数学(已下线)专题02 三角函数 三角恒等变换(难点)-2020-2021学年高一数学下学期期末专项复习(北师大版2019必修第二册)河南省“顶尖名校”2020-2021学年高一下学期期末联考数学试题 (已下线)大题好拿分期中考前必做30题(压轴版)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)
名校
解题方法
2 . 在海岸
处,发现北偏东
方向,距离
为
海里的
处有一艘走私船,在
处北偏西
方向,距离
为
海里的
处有一艘缉私艇奉命以
海里/时的速度追截走私船,此时,走私船正以
海里/时的速度从
处向北偏东
方向逃窜.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/2a805fd9-88b5-48f8-b5de-3d4e46e9a1ee.png?resizew=201)
(1)问
船与
船相距多少海里?
船在
船的什么方向?
(2)问缉私艇沿什么方向行驶才能最快追上走私船?并求出所需时间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9563540452712a60d70f76cf22a868c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a4c9b697e3df2b5469b71d3b5e47a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e4123975f257306440158659634c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/2a805fd9-88b5-48f8-b5de-3d4e46e9a1ee.png?resizew=201)
(1)问
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)问缉私艇沿什么方向行驶才能最快追上走私船?并求出所需时间.
您最近一年使用:0次
2020-05-10更新
|
2260次组卷
|
10卷引用:天津市第七中学2019-2020学年下学期高一期中考试数学试题
天津市第七中学2019-2020学年下学期高一期中考试数学试题天津市河东区2019-2020学年高一下学期期中数学试题江苏省连云港市赣榆区智贤中学2019-2020学年高一下学期5月月考数学试题陕西省西安中学2020-2021学年高二(实验班)上学期第一次月考理科数学试题江苏省南京市第一中学2019-2020学年高一下学期期中数学试题(已下线)【新东方】高中数学20210429—012【2021】【高一下】浙江省杭州市学军中学(紫金港学区)2020-2021学年高一下学期期中数学试题湖南省娄底市第一中学2020-2021学年高一下学期期中数学试题江苏省无锡市第六高级中学2020-2021学年高一下学期期中数学试题甘肃省张掖市第二中学2021-2022学年高二上学期10月月考数学 理科(B)试题
名校
解题方法
3 . 如图是一矩形滨河公园
,其中
长为
百米,
长为
百米,
的中点
为便民服务中心.根据居民实际需求,现规划建造三条步行通道
、
及
,要求点
、
分别在公园边界
、
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/e60bd03d-f9b2-4b80-81a5-dc64465975c3.png?resizew=140)
(1)设
.①求步道总长度
关于
的函数解析式
;②求函数
的定义域.
(2)为使建造成本最低,需步行通道总长最短,试求步行通道总长度的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0b06dc01c30d13f64be2ac6a1d811e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/e60bd03d-f9b2-4b80-81a5-dc64465975c3.png?resizew=140)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e8464e39bae544bf5eac7a100106a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abf5c485f30f08d4453302eb360eec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abf5c485f30f08d4453302eb360eec4.png)
(2)为使建造成本最低,需步行通道总长最短,试求步行通道总长度的最小值.
您最近一年使用:0次
2020-04-30更新
|
571次组卷
|
2卷引用:江苏省盐城市伍佑中学2019-2020学年高一下学期4月学情调研考试数学试题
4 . 如图,半圆
的直径为2,
为直径延长线上的一点,
,
为半圆上任意一点,以
为一边作等边三角形
.设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/21c8762d-752e-41bc-929c-63b8e7cc6687.png?resizew=159)
(1)当
,求四边形
的面积;
(2)当
为何值时,线段
最长并求最长值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7e00f8bacce4d649b535449f04568c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/21c8762d-752e-41bc-929c-63b8e7cc6687.png?resizew=159)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93532b51c05e988a021b8132b5b207d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea16ceca816f7d3d50650af141baf42.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
您最近一年使用:0次
5 . 如图所示,某游乐园的一个摩天轮的半径为10米,轮子的底部到地面的距离为2米,该摩天轮沿逆时针方向旋转,且每20分钟旋转一圈,当摩天轮上某人经过点
(到地面的高度为17米)时开始计时,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/103c0bd0-a5e4-40a8-baa0-24aa398478ce.png?resizew=152)
(1)求此人转动5分钟后相对于地面的高度;
(2)当摩天轮上此人经过点
时,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9adfcaf1c17fd75942b51c1edef2a818.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/103c0bd0-a5e4-40a8-baa0-24aa398478ce.png?resizew=152)
(1)求此人转动5分钟后相对于地面的高度;
(2)当摩天轮上此人经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc692c596d0b052f2ec1953b99be4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
名校
6 . 某工厂有甲、乙两生产车间,其污水瞬时排放量
(单位:
)关于时间
(单位:
)的关系均近似地满足函数
,其图象如图所示:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/14a6999f-7115-4c5d-80e5-a240365e946c.png?resizew=164)
(1)根据图象求函数解析式;
(2)若甲车间先投产,1小时后乙车间再投产,求该厂两车间都投产
时刻的污水排放量;
(3)由于受工厂污水处理能力的影响,环保部门要求该厂两车间任意时刻的污水排放量之和不超过
,若甲车间先投产,为满足环保要求,乙车间比甲车间至少需推迟多少小时投产?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1eea1578e0092731f1687c373ad4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48bfd698bfc254672199b051c052add0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/14a6999f-7115-4c5d-80e5-a240365e946c.png?resizew=164)
(1)根据图象求函数解析式;
(2)若甲车间先投产,1小时后乙车间再投产,求该厂两车间都投产
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ebd1d359040a1172a944ded96ed0127.png)
(3)由于受工厂污水处理能力的影响,环保部门要求该厂两车间任意时刻的污水排放量之和不超过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16176c107111e3169e96fc012a9f118c.png)
您最近一年使用:0次
2020-03-03更新
|
523次组卷
|
3卷引用:山东省日照市莒县、岚山2018-2019学年高一下学期期中数学试题
山东省日照市莒县、岚山2018-2019学年高一下学期期中数学试题(已下线)第7章 三角函数 单元测试(单元综合检测)(难点)(单元培优)-2021-2022学年高一数学课后培优练(苏教版2019必修第一册)湖北省武昌实验中学2023-2024学年高一下学期3月月考数学试卷
名校
解题方法
7 . 如图,甲、乙两个企业的用电负荷量
关于投产持续时间
(单位:小时)的关系
均近似地满足函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/c7a66083-5d62-4d81-9b78-3a7fc14c543e.png?resizew=277)
(1)根据图象,求函数
的解析式;
(2)为使任意时刻两企业用电负荷量之和不超过9,现采用错峰用电的方式,让企业乙比企业甲推迟
小时投产,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9b65c51e37f40211b876be02105701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3140df7d3792c51dc1c728f0cd17a25.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/c7a66083-5d62-4d81-9b78-3a7fc14c543e.png?resizew=277)
(1)根据图象,求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
(2)为使任意时刻两企业用电负荷量之和不超过9,现采用错峰用电的方式,让企业乙比企业甲推迟
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f07948e9258b482a2164ac871f90f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
解题方法
8 . 为解决城市的拥堵问题,某城市准备对现有的一条穿城公路
进行分流,已知穿城公路
自西向东到达城市中心
后转向
方向,已知
,现准备修建一条城市高架道路
,
在
上设一出入口
,在
上设一出口
,假设高架道路
在
部分为直线段,且要求市中心
与
的距离为
.
![](https://img.xkw.com/dksih/QBM/2020/2/17/2401183906324480/2401767045939200/STEM/09110a905cf44e06b6e268833d5922a5.png?resizew=302)
(1)若
,求两站点
之间的距离;
(2)公路
段上距离市中心![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
处有一古建筑群
,为保护古建筑群,设立一个以
为圆心,
为半径的圆形保护区.因考虑未来道路
的扩建,则如何在古建筑群和市中心
之间设计出入口
,才能使高架道路及其延伸段不经过保护区?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1eb76f88cb973c220cffa1c9c0721a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1eb76f88cb973c220cffa1c9c0721a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55bf0d9510623b443eab082ec60fba85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65b53c8c23a3133fde0835b404304a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cfef623a9534b5708df5f95f1760a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09ecb9867a677cada4e7a936cf8db9c7.png)
![](https://img.xkw.com/dksih/QBM/2020/2/17/2401183906324480/2401767045939200/STEM/09110a905cf44e06b6e268833d5922a5.png?resizew=302)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ddcedaf720653534a228a82deb9215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(2)公路
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cfef623a9534b5708df5f95f1760a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f822ab19f3478edf0270023e10d4e27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93a093fc910e039897e5f4a6a7bd82da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2020-02-18更新
|
643次组卷
|
3卷引用:江苏省无锡市天一中学2018-2019学年高一下学期期中数学试题(强化班)
名校
解题方法
9 . 如图,某小区为美化环境,建设美丽家园,计划在一块半径为R(R为常数)的扇形区域上,建个矩形的花坛CDEF和一个三角形的水池FCG.其中
,O为圆心,
,C,G,F在扇形圆弧上,D,E分别在半径OA,OB上,记OG与CF,DE分别交于M,N,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/0eaebb3e-9bea-4dbc-94ec-b046eeb6ba76.png?resizew=189)
(1)求△FCG的面积S关于
的关系式,并写出定义域;
(2)若R=10米,花坛每平方米的造价是300元,试问矩形花坛的最高造价是多少?(取
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2411b47d41908ca6384abc6a16a4a6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff5c21185c13eae675906dabd3593c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6105484f39e7217b5a2d253b3020fc2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/0eaebb3e-9bea-4dbc-94ec-b046eeb6ba76.png?resizew=189)
(1)求△FCG的面积S关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)若R=10米,花坛每平方米的造价是300元,试问矩形花坛的最高造价是多少?(取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af11e604b7ef4af890b49a9d267068b3.png)
您最近一年使用:0次
2020-02-13更新
|
871次组卷
|
4卷引用:河北省邢台市2019-2020学年高一上学期期末数学试题
解题方法
10 . 如图,半圆的直径
,
为圆心,
,
为半圆上的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/f5335f8d-836a-43c9-a8e7-309593b15a32.png?resizew=151)
(Ⅰ)请你为
点确定位置,使
的周长最大,并说明理由;
(Ⅱ)已知
,设
,当
为何值时,
(ⅰ)四边形
的周长最大,最大值是多少?
(ⅱ)四边形
的面积最大,最大值是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/f5335f8d-836a-43c9-a8e7-309593b15a32.png?resizew=151)
(Ⅰ)请你为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
(Ⅱ)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15416b74b2ecbcfa38cf34a9ffff730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d2a7224c0bfb1e460408991c568e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(ⅰ)四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(ⅱ)四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次