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1 . 已知
外接圆的圆心为点
,半径为
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
A.若![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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解题方法
2 . 已知
为虚数单位,则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
A.在复平面内,点![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
B.虚数![]() ![]() |
C.复数![]() ![]() ![]() |
D.已知![]() ![]() ![]() ![]() ![]() |
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3 . 下列说法正确的是( )
A.空间中两直线的位置关系有三种:平行、垂直和异面 |
B.若空间中两直线没有公共点,则这两直线异面 |
C.和两条异面直线都相交的两直线是异面直线 |
D.若两直线分别是正方体的相邻两个面的对角线所在的直线,则这两直线可能相交,也可能异面 |
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解题方法
4 . 如图,在等腰梯形
中,
,
,点
为边
上靠近点
的六等分点,
为
中点.
表示
;
(2)设
为
中点,
是线段
(不含端点)上的动点,
交
于点
,若
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a68895db9b734487593646438653ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b7ae2f931da35ad6cd16e2dec974f12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae54940f33b8714da5fe3b7546f8b3dc.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61197405c5bc077c5944d0243310b2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a14346c46472cf74b617fd26784b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53351d85954737437000906554e8283.png)
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5 . 为提升城市景观面貌,改善市民生活环境,某市计划对一公园的一块四边形区域
进行改造.如图,
(百米),
(百米),
,
,
,
,
,
分别为边
,
,
的中点,
所在区域为运动健身区域,其余改造为绿化区域,并规划4条观景栈道
,
,
,
以及两条主干道
,
.(单位:百米)
,求主干道
的长;
(2)当
变化时,
①证明运动健身区域
的面积为定值,并求出该值;
②求4条观景栈道总长度的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ec894b5364994873467dc3218a5ed6.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/2a30f3a8b673cc28bd90c50cf1a35281.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2281cb6df0c3c518ce5ed19a02b57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c4340dcffb0783d118a587e5352a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
①证明运动健身区域
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2281cb6df0c3c518ce5ed19a02b57e.png)
②求4条观景栈道总长度的取值范围.
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6 . 已知正四棱锥
的底面边长为
,高为3,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a5faf3cbb633fc4294c8ce703c64c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
A.若点![]() ![]() ![]() |
B.直径为1的球能够整体放入正四棱锥![]() |
C.若点![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.若以点![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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7 . 对非零向量
,定义运算“(*)”:
,其中
为
与
的夹角,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfe06e39ed151db4d8e2cb9b50faeda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若Rt![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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8 . 杭州亚运会期间,某社区有200人参加协助交通管理的志愿团队,为了解他们参加这项活动的感受,用按比例分配的分层抽样的方法随机抽取了一个容量为40的样本,若样本中女性有16人,则该志愿团队中的男性人数为__________ .
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2024-05-04更新
|
878次组卷
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3卷引用:湖北省武汉市第六中学2023-2024学年高一下学期6月月考数学试卷
湖北省武汉市第六中学2023-2024学年高一下学期6月月考数学试卷(已下线)专题14.1统计(1))--重难点突破及混淆易错规避(苏教版2019必修第二册)陕西省安康市高新中学,安中分校2024届高三下学期模拟预测理科数学试题
名校
解题方法
9 . 设
,我们常用
来表示不超过
的最大整数.如:
.
(1)求证:
;
(2)解方程:
;
(3)已知
,若对
,使不等式
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9322dd8f56b5f8d2c667fdf0d4a9f9aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f161c2a3717f1b6c62d0d7dae0b606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0147928001a2b80afcd6c28c8091cf91.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d959974d562cb9ef138676ae943bc19c.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8300c3dc2f5674dddbaa768109142592.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48da06492a0b0c8a31a5dc1531e8f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bb945c963b0d56df9d784d3e3288c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a9d89ec3d1181091ea159b40952b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-03-13更新
|
572次组卷
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4卷引用:湖北省武汉市江夏区第一中学2023-2024学年高一下学期3月月考数学试题
名校
解题方法
10 .
年
月
日,雅万高铁正式开通运营,标志着印度尼西亚迈入高铁时代,中国印度尼西亚共建“一带一路”取得重大标志性成果.中国高铁正在成为共建“一带一路”和国际产能合作的重要项目.国内某车辆厂决定从传统型、智能型两种型号的高铁列车车厢中选择一种进行投资生产.已知投资生产这两种型号车厢的有关数据如下表(单位:百万元)
已知
,每销售
节智能型车厢时,需上交
百万元用于当地基础建设.假设生产的车厢当年都能销售完.
(1)设
、
分别为该厂投资传统型和智能型两种型号车厢的年利润,分别求出
、
与年产量
之间的函数关系式;
(2)①分别求出生产两种型号车厢的平均利润的最大值;
②要使生产两种型号车厢的平均利润最大,该厂应该选择生产哪种型号车厢?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e946baf1316ac1f219398ecedadf6cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feda926749de04fa585f73f84c568f0c.png)
年固定成本 | 每节车厢成本 | 每节车厢价格 | 每年最多生产的节数 | |
传统型 | ![]() | ![]() | ![]() | ![]() |
智能型 | ![]() | ![]() | ![]() | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3e8da4c8513ae60f5116baa70f35f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7a1d0792285a953c9341734564a1c8.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)①分别求出生产两种型号车厢的平均利润的最大值;
②要使生产两种型号车厢的平均利润最大,该厂应该选择生产哪种型号车厢?
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2024-03-07更新
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378次组卷
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2卷引用:湖北省武汉市华中师范大学第一附属中学2023-2024学年高一上学期1月期末检测数学试题