1 . (1)计算:
.
(2)利用0,1,2,4,5,7这六个数字,组成无重复数字的三位数,其中奇数有多少个?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c017d370d21b1ededf8e55fc5b48ec4.png)
(2)利用0,1,2,4,5,7这六个数字,组成无重复数字的三位数,其中奇数有多少个?
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2 . 如图,在四棱锥P—ABCD中,平面
平面ABCD,
,
,M为棱PC的中点.
平面PAD;
(2)若
,求二面角
的余弦值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ad6a0124359e8b9f7649cf0bff51ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca91743fcdc23d0276a543813ec825fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c098151bc644ca1eda2a76032927f82d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f369bec2d5682bf6b8b317a08aff546.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c651b55c0ad7f63e3451557ab4c378be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b270c5d399f46eb9048aeebf7a1fe174.png)
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名校
3 . 已知函数
.
(1)若
是
上的单调递增函数,求
的取值范围;
(2)当
时,
对
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0cf2663917582f09bc11e150b3a969.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5374bfc463f980d9dab1ffda5f59885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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|
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2卷引用:四川省宜宾市2024届高三下学期第二次诊断性考试文科数学试卷
名校
4 . 在平面直角坐标系中,点
是曲线
(
为参数)上的动点,以坐标原点
为极点,
轴的正半轴为极轴建立极坐标系,以极点
为中心,将线段
逆时针旋转
得到
,设点
的轨迹为曲线
.
(1)求曲线
的极坐标方程;
(2)在极坐标系中,点
的坐标为
,射线
与曲线
分别交于
两点,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c860a9d55f8e41a1a7ab2d86609062b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
(2)在极坐标系中,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/452e090d7ea8116cca7815042e0f15c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35b51b6752efae30923d08439dc6901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e632de0a4a7142242b1c4310b0a6f185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
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2024-04-10更新
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3卷引用:四川省宜宾市2024届高三下学期第二次诊断性考试理科数学试卷
名校
解题方法
5 . 已知
的内角A,B,C所对的边分别为a,b,c,向量
,
且
.
(1)求角A;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aed3e746ba4faceab675c22f3d39da8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55aa8ab39b859f842fd26246d2c3d463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b5f7053c7a9f7582246ca606d55f6.png)
(1)求角A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21143d45f8a1eec5a18f3b82c78ac217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-04-10更新
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3卷引用:四川省宜宾市珙县中学校2023-2024学年高一下学期3月月考数学试题
名校
解题方法
6 . 近年来,长安区大力发展大花卉产业,其中玫瑰既有观赏价值也能加工成食品和高档化妆品而得到环山路一带农民大面种植.已知玫瑰的株高y(单位:cm)与一定范围内的温度x(单位:
)有关,现收集了玫瑰的13组观测数据,得到如下的散点图:
或
建立y关于x的回归方程,令
,
得到如下数据:
且
与
的相关系数分别为
,
,且
.
(1)用相关系数说明哪种模型建立y与x的回归方程更合适;
(2)根据(1)的结果及表中数据,建立y关于x的回归方程;
(3)已知玫瑰的利润z与x、y的关系为
,当x为何值时,z的预期最大.
参考数据和公式:
,
,
,对于一组数据
,其回归直线方程
的斜率和截距的最小二乘法估计分别为
,
,相关系数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa088a4729226b696c536845791d4c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c305c245407e2152ef4c582dc2d3f9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8901c469ca9b12a490dbb827c906215b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d52b5c676c90b24db90d977c829193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea905439d2e55ab4dcaa355eca72cbf1.png)
10.15 | 109.94 | 3.04 | 0.16 | ||||
13.94 | 11.67 | 0.21 | 21.22 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33655f889e85f295c28517e7079a3214.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2038552dcd0649b737ead848dd47a061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2858005b9ae89ae080d83dcc13cf8e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3e95410f3b4fcb0cba425b521d1f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963b8975e1163d137d90234ba7011320.png)
(1)用相关系数说明哪种模型建立y与x的回归方程更合适;
(2)根据(1)的结果及表中数据,建立y关于x的回归方程;
(3)已知玫瑰的利润z与x、y的关系为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6dbc48d508c39b922fe66b1c5ba694.png)
参考数据和公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a2a1cc1ee4180dd681f43cb17e5217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bff34a5ad64458047d602a8f3423f73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c611e88194adf02c0c806c8497e105e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab5a49a06acfed650f11eb5fe186113f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096adfb259a142cda62b51e2b08ca9e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a2c503f4f65e958539a7ed809a8acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ff0671492cc8f5ae8faea92afb4c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831e3350f3665fe5baed21f64b99528b.png)
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2024-04-10更新
|
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|
19卷引用:四川省宜宾天立学校2022-2023学年高二上学期第三学月考理科数学试题
四川省宜宾天立学校2022-2023学年高二上学期第三学月考理科数学试题湖北省八市2021届高三下学期3月联考数学试题(已下线)专题8.1成对数据的统计相关性、一元线性回归模型及其应用(B卷提升篇)-2020-2021学年高二下学期数学选择性必修第三册同步单元AB卷(新教材人教A版,浙江专用)(已下线)第八章 成对数据的统计分析单元测试B卷-【新高考题型】2020-2021学年高二数学下学期单元实战演练AB卷(人教A版2019)(已下线)专题2.5 概率与统计-回归分析、独立性检验-2021年高考数学解答题挑战满分专项训练(新高考地区专用)广东省深圳市宝安区2022届高三上学期第一次调研(10月)数学试题(已下线)专题46 统计与统计案例-备战2022年高考数学一轮复习一网打尽之重点难点突破陕西省咸阳市武功县普集高中2021-2022学年高一宏志班下学期第一次月考数学试题广西河池市八校2021-2022学年高二下学期第一次联考数学(文)试题河北省石家庄市2022-2023学年高二下学期期末数学试题陕西省西安市长安区第一中学2023-2024学年高二下学期第一次教学质量检测数学试卷(已下线)第八章 成对数据的统计分析总结 第二课提炼本章思想(已下线)第八章 成对数据的统计分析总结 第三练 方法提升应用(已下线)模块四专题3重组综合练(陕西)(8+3+3+5模式)(北师大版高二)(已下线)模块一 专题1 《线性回归与相关性和独立性检验》(北师大版高二期中)B拔高卷(已下线)高二下学期第三次月考模拟卷(新题型)(范围:导数+选择性必修第三册)-2023-2024学年高二数学题型分类归纳讲与练(人教A版2019选择性必修第三册)广东省东莞市东华高级中学、东华松山湖高级中学2022-2023学年高二下学期期末学习效率检测数学试题(已下线)重组1 高二期末真题重组卷(河北卷)B提升卷(已下线)专题07 线性回归分析与独立性检验--高二期末考点大串讲(苏教版2019选择性必修第二册)
名校
解题方法
7 . 已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0fe9059acc47d2447576e1260c4622.png)
的上顶点为B,右焦点为F,点B、F都在直线
上.
(1)求椭圆
的标准方程及离心率;
(2)设直线
与椭圆
相切于第一象限内的点
,不过原点
且平行于
的直线
与椭圆
交于不同的两点
,
,点
关于原点
的对称点为
.记直线
的斜率为
,直线
的斜率为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0fe9059acc47d2447576e1260c4622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434249d6640b0c1a712d215cf8b83d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a47eed3e8f5c0f0e130dffdb1bcdefe.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8e1ebc1b3f6e793dd06aac312dc9bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/5963abe8f421bd99a2aaa94831a951e9.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/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67351fe10fcfc3f9072eec4c60bfaaa5.png)
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210次组卷
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2卷引用:四川省宜宾市叙州区第二中学校2023-2024学年高二下学期第一学月考试数学试题
8 . 在
中,角
所对的边分别是
,在下面三个条件中任选一个作为条件,解答下列问题,三个条件为:
①
;②
;③
.
(1)求角A的大小;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211a30d81bab3a8557f43abc23cbb35c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c249b23e67899be4cd788104bf97d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52f6b15b2acbed193520b12e7185f38.png)
(1)求角A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b482f10fcaa4dfa4429a074c526a772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69225cfdfbc0a9a1ccfdd15c46353b8f.png)
您最近一年使用:0次
解题方法
9 . 如图,在四棱锥
中,
平面
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/103b90e7-6593-4971-8cbf-96eda1c81fe6.png?resizew=166)
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/690189033ef6d65e1410a753fdff1e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9fe7fc07ceb6bc2f9033035d7d5697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/103b90e7-6593-4971-8cbf-96eda1c81fe6.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d95e78927443bbadb5bf60f1c836ea24.png)
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10 . 已知椭圆
的下、上顶点分别为
,左、右顶点分别为
,四边形
的面积为
,若椭圆
上的点到右焦点距离的最大值和最小值之和为6.
(1)求椭圆
的方程;
(2)过点
且斜率不为0的直线
与
交于
(异于
两点,设直线
与直线
交于点
,探究三角形
的面积是否为定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d468be20b4d43f5de75416de20e8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e5d91f4f631c580c155eba8c92bda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c423cfa71956862edbed10a5ba12d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b3c94d505e7c5bcce94afec4af3d92.png)
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