解题方法
1 . 现某公园内有一个半径为
米扇形空地
,且
,公园管理部门为了优化公园功能,决定在此空地上建一个矩形
的老年活动场所,如下图所示有两种情况可供选择.
,请用
表示矩形
的面积,并求面积最大值
(2)如果选择图二,求矩形
的面积最大值,并说明选择哪种方案更优(面积最大)(参考数据
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0f4a227754facf7d5aee67d230c0ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e35c1c9614a2d23b564c116da64224ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
(2)如果选择图二,求矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52881be613aa404e553da30d8987cfad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bb3f35e3db7c1f3a3dd3eb20151b5f.png)
您最近一年使用:0次
解题方法
2 . 某街道规划建一座口袋公园.如图所示,公园由扇形
区域和三角形
区域组成.其中
三点共线,扇形半径
为30米.规划口袋公园建成后,扇形
区域将作为花草展示区,三角形
区域作为亲水平台区,两个区域的所有边界修建休闲步道.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/b1bb7ad3-ee63-4f58-8211-0d81d9483eaa.png?resizew=167)
(1)若
,
,求休闲步道总长(精确到米);
(2)若
,在前期民意调查时发现,绝大部分街道居民对亲水平台区更感兴趣.请你根据民意调查情况,从该区域面积最大或周长最长的视角出发,选择其中一个方案,设计三角形
的形状.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed01d1ff5a7f21a68fb3a1e5c7f393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d322efb382f7cc7a9bb242bcd706d649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed01d1ff5a7f21a68fb3a1e5c7f393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/b1bb7ad3-ee63-4f58-8211-0d81d9483eaa.png?resizew=167)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3925e45d83a5383e492cdb1666493cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/718db7266fcd1f56a5992783235ab720.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7df59d622d4b375f2e811020babf06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
您最近一年使用:0次
名校
解题方法
3 . 在
中,a,b,c分别为内角A,B,C所对的边,且满足
.
(1)求角A的大小;
(2)试从条件①②③中选出两个作为已知,使得
存在且唯一,写出你的选择___________,并以此为依据求
的面积.(注:只需写出一个选定方案即可)
条件①:
;条件②:
;条件③:
.
注:如果选择的条件不符合要求,第(2)问得0分;如果选择多个符合要求的条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9079579f1ce8b994924c8604551df05.png)
(1)求角A的大小;
(2)试从条件①②③中选出两个作为已知,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d62e60396295cd74d03e38978405bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe8fff55c06f220725f4124e45a1e89.png)
注:如果选择的条件不符合要求,第(2)问得0分;如果选择多个符合要求的条件分别解答,按第一个解答计分.
您最近一年使用:0次
2023-05-26更新
|
1018次组卷
|
5卷引用:北京市人大附中2023届高三三模数学试题
4 . 如图所示,是一块三角形空地,其中
,
,
.当地政府规划将这块空地改造成一个休闲娱乐场所,拟在中间挖一个人工湖
,其中
在边
上,且
,挖出的泥土堆放在
地带上形成假山,剩下的
地带建成活动场所.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/25/38aaaf17-f42c-4cdf-8bdc-d2174cbe9237.png?resizew=108)
(1)若要求挖人工湖用地
的面积是堆假山用地
面积的
倍,试确定
的大小;
(2)为节省投入资金,人工湖
的面积要尽可能小,问如何设计施工方案,可使
的面积最小?最小面积是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29ac2834e2f2f1c32149fe31f107134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd446f72000300a54fb9e1e28325093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b0eb72986587ffecf87c22a224bcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edafce95aade0386bc0d78f679dcf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf2b5e712b42f748a3c30bb5d160c18.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/25/38aaaf17-f42c-4cdf-8bdc-d2174cbe9237.png?resizew=108)
(1)若要求挖人工湖用地
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edafce95aade0386bc0d78f679dcf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92f279be7c8a11dcd2c0a97116bdcbb.png)
(2)为节省投入资金,人工湖
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
您最近一年使用:0次
2023-04-20更新
|
245次组卷
|
2卷引用:山西省太原市2022-2023学年高一下学期期中数学试题
解题方法
5 . 如图所示,某镇有一块空地
,其中
,
km,
,当地镇政府规划将这块空地改造成一个旅游景点,拟在中间挖一个人工湖
,其中
,
都在边
,
上,且
,挖出的泥土堆放在
地带上形成假山,剩下的
地带开设儿童游乐场,为安全起见,需在
的一周安装防护网.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/553a0321-a5a6-4f81-9924-267d4f60f9f5.png?resizew=114)
(1)当
时,求防护网的总长度;
(2)若要求挖人工湖用地
的面积是堆假山用地
的面积的
倍,试确定
的大小;
(3)为节省投入资金,人工湖
的面积要尽可能小,问如何设计施工方案,可使
的面积最小?最小面积是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ecf7d59234f76e997e02e9709f1a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3393af6d2e25ea81810c2f04c329840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b0eb72986587ffecf87c22a224bcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edafce95aade0386bc0d78f679dcf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf2b5e712b42f748a3c30bb5d160c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c29e963e1871b415c086bc600d16bd5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/553a0321-a5a6-4f81-9924-267d4f60f9f5.png?resizew=114)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d3f2cfb6f2626da6a6a4cc26711114.png)
(2)若要求挖人工湖用地
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edafce95aade0386bc0d78f679dcf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92f279be7c8a11dcd2c0a97116bdcbb.png)
(3)为节省投入资金,人工湖
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
您最近一年使用:0次
解题方法
6 . 江西某中学校园内有块扇形空地
,经测量其半径为
,圆心角为
,学校准备在此扇形空地上修建一所矩形室内篮球场
,初步设计方案1如图1所示.
弧的中点
,连接
,设
,试用
表示方案1中矩形
的面积,并求其最大值;
(2)你有没有更好的设计方案2来获得更大的篮球场面积?若有,在图2中画出来,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8badcdb1e5621f0ac4d9272041185a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d1308d5db144e31b4d0211c63ef52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2494168ffc550b1417f20e47c13aa81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)你有没有更好的设计方案2来获得更大的篮球场面积?若有,在图2中画出来,并证明你的结论.
您最近一年使用:0次
2022-10-12更新
|
306次组卷
|
4卷引用:广东省四校2024届高三上学期10月联考(二)数学试题
解题方法
7 . 某地区组织的贸易会现场有一个边长为
的正方形展厅
,
分别在
和
边上,图中
区域为休息区,
,
及
区域为展览区.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/1382d96d-56ea-4573-8d2c-24a493089892.png?resizew=127)
(1)若
的周长为
,求
的大小;
(2)若
,请给出具体的修建方案,使得展览区的面积
最大,并求出最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999c42a021bdc576f097246b9e64d986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eda61683bb1d4d62441f0625097b477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e59b7c0d4a0b312e674b7bb061240b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d0469336f71edd52dc9148c67db052.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/1382d96d-56ea-4573-8d2c-24a493089892.png?resizew=127)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d0469336f71edd52dc9148c67db052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a54e7b35c73ee578c4d01479ddb74cc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f31c87f79e29c79a26d3422774db134f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
名校
8 . “精准扶贫,修路先行”,为解决城市A和山区B的物流运输问题,方便B地的农产品运输到城市A交易,计划在铁路AD间的某一点C处修建一条笔直的公路到达B地.示意图如图所示,
千米,
千米,
.已知农产品的铁路运费为每千米1百元,公路运费为每千米2百元,农产品从B到A的总运费为
百元.为了求总运费
的最小值,现提供两种方案建立函数关系,方案1:设
千米;方案2:设
.
![](https://img.xkw.com/dksih/QBM/2021/5/25/2728844525436928/2763381872025600/STEM/da1dff13-1d5e-4a97-bcfc-47660ced5353.png?resizew=203)
(1)试将
分别表示为关于
、
的函数关系式
和
;
(2)请只选择一种方案,求出总运费
的最小值以及此时
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80739f2486099ffd39a3038c60f41825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00eadc41339daa56623a3d3d28460936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff83a75900ae3d07bbb4eda227b449cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bfc0387785bf3c60f75ed3d34cc98a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1950345548fe750b80ce79b168969ca.png)
![](https://img.xkw.com/dksih/QBM/2021/5/25/2728844525436928/2763381872025600/STEM/da1dff13-1d5e-4a97-bcfc-47660ced5353.png?resizew=203)
(1)试将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3634f1a6094deeafc4c3de8277d85ce6.png)
(2)请只选择一种方案,求出总运费
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
2021-07-13更新
|
534次组卷
|
4卷引用:湖北省黄石市第二中学2023-2024学年高二上学期第三次统测数学试题
名校
解题方法
9 . 如图所示,某市有一块空地
,其中
,
,
.当地政府计划将这块空地改造成一个旅游景点,拟在中间挖一个人工湖
,其中
,
,都在边
上,且
,挖出的泥土堆放在
地带上形成假山,剩下的
地带开设儿童游乐场.为安全起见,需在
的周围安装防护网.设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/274d4ac8-b617-4fde-abfc-c2ca255edeab.png?resizew=96)
(1)当
时,求此时防护网的总长度;
(2)若
,问此时人工湖用地
的面积是堆假山用地
的面积的多少倍?
(3)为节省投入资金,人工湖
的面积要尽可能小,问如何设计施工方案,可使
的面积最小?最小面积是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266444a7cc8bf21887bccd82416dceec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88d69dd6622fca37237cb4f9667d488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b0eb72986587ffecf87c22a224bcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edafce95aade0386bc0d78f679dcf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf2b5e712b42f748a3c30bb5d160c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c29e963e1871b415c086bc600d16bd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb35158a52a23a6e57ff890cef8c7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/274d4ac8-b617-4fde-abfc-c2ca255edeab.png?resizew=96)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e490278a7798a2fdd9625af6a024ab.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2212c19e55001b3cd6c7c656edeae538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edafce95aade0386bc0d78f679dcf47.png)
(3)为节省投入资金,人工湖
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
您最近一年使用:0次
2021-06-20更新
|
808次组卷
|
3卷引用:天津市南开中学2022-2023学年高一下学期期中数学试题
19-20高二下·江苏苏州·期中
名校
解题方法
10 . 如图所示,某镇有一块空地
,其中
.当地政府计划将这块空地改造成一个旅游景点,拟在中间挖一个人工湖
,其中
都在边
上,且
,挖出的泥土堆放在
地带上形成假山,剩下的
地带开设儿童游乐场.为安全起见,需在
的周围安装防护网.设
.
![](https://img.xkw.com/dksih/QBM/2021/3/11/2675705267904512/2676338543640576/STEM/a3df37ce-ea14-4944-80d0-5973eac8a189.png)
(1)当
时,求
的值,并求此时防护网的总长度;
(2)若
,问此时人工湖用地
的面积是堆假山用地
的面积的多少倍?
(3)为节省投入资金,人工湖
的面积要尽可能小,问如何设计施工方案,可使
的面积最小?最小面积是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6748adca7118689bffd79ce7666c90b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c3fe26b378cb2665c06c5d8039d675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edafce95aade0386bc0d78f679dcf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf2b5e712b42f748a3c30bb5d160c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c29e963e1871b415c086bc600d16bd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb35158a52a23a6e57ff890cef8c7cf.png)
![](https://img.xkw.com/dksih/QBM/2021/3/11/2675705267904512/2676338543640576/STEM/a3df37ce-ea14-4944-80d0-5973eac8a189.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc8a5801b87418e955e5d8b5f785b090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9f94c98de139b7455211d96df0a668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edafce95aade0386bc0d78f679dcf47.png)
(3)为节省投入资金,人工湖
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
您最近一年使用:0次
2021-03-12更新
|
1205次组卷
|
7卷引用:福建省福州市鼓楼区福州黎明中学2022-2023学年高一下学期期中数学试题