解题方法
1 . 浓浓桑梓情,拳拳助疫心.为了抗击疫情,各路爱心人士纷纷捐款捐物,某地第一天收到捐赠的口罩共1000盒,第二天收到捐赠的口罩共1500盒,第三天收到捐赠的口罩共2000盒,……,照此规律,募捐共20000盒口罩至少需要的天数为( )
A.6 | B.7 | C.8 | D.9 |
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解题方法
2 . 已知
的内角A,B,C的对边分别为a,b,c,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901c4fa44b33e2d4522086ce5bd924e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f9ac7fa148b69448760b9b631745a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
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3 . 如图,在五面体ABCDE中,
为等边三角形,平面
平面ACDE,且
,
,F为边BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/f0fb1c0f-9193-4814-bd31-deca3bd3e499.png?resizew=160)
(1)证明:
平面ABE;
(2)求DF与平面ABC所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b314c918c57e91233f24ffa5e6e06288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca27faa94a8e9a7f5b8729338d0014b8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/f0fb1c0f-9193-4814-bd31-deca3bd3e499.png?resizew=160)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2b5cfae407016cad45bbdefea05833.png)
(2)求DF与平面ABC所成角的大小.
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4 . 函数
的最小正周期为T,若
,且
的图象关于直线
对称,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6e228f7fcde84d3be3469bf316b9f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13ace9363ef85624d3797b33ecb6174f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dba925e7adee178025d1f3e46a5e8489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9448bf1d6136b3a108e7ea60506ad39.png)
A.1 | B.2 | C.3 | D.4 |
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名校
解题方法
5 . 已知集合
,
.
从①
;②
;③
中选择一个填入横线处并解答.
(1)若
,求
;
(2)若______,求实数
的取值范围.
注:如果选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24af1bea5ecbe5fa59d54d0d7c4f7e21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b698a4eca61a9429825beaa6ac25f6ae.png)
从①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c778ccfbd6e854a671c0f5576c596c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71f62a3955d74c69bd1a6fb28327c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a587610de8c0fcdb799c93a5188e5e2c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若______,求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
注:如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
2023-01-05更新
|
290次组卷
|
3卷引用:江西省九江市2022-2023学年高一上学期期末考试数学试题
江西省九江市2022-2023学年高一上学期期末考试数学试题山东省菏泽市东明县东明县第一中学2022-2023学年高一上学期期末数学试题(已下线)模块二 专题1《对数函数及其应用》单元检测篇 A基础卷 (人教A)
6 . 定义在
上的函数
满足:
,
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd6ebf0a370d321e89a8f9921041a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3ec79861b46bc1284f12ef1c482ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c137c35fd9958925f98f03a0d17ea8ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885d45cc21b39fd77d325d4b460fab2.png)
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解题方法
7 . 设函数
的定义域为
,当
时,
,若
,
为偶函数,
为奇函数,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459d1d8477fd46ece5a65d40e32b4bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67cb699de08e7926ad18decfa1f5543d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e81e15b871dd32b2438ef8025bcc42d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc0014c54d3d529c3d619a34ba735cd.png)
您最近一年使用:0次
解题方法
8 . 设
,
,已知定义在
上的函数
为奇函数,且其图像过点
.
(1)求
的解析式;
(2)判断
的单调性,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a14ff78575ff72d20376c17b1a5822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7938936a3bcc6db1dd98b714d8112186.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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9 . 已知幂函数
的图像关于直线
对称,且在
上单调递减,则关于
的不等式
的解集为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751a5650bacbc9af3080c8881f89b760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55d6807418c4cdab174b7e0c4b574777.png)
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名校
10 . 已知一组数据
,
,…,
的平均数为
,标准差为
,
,若
,则
与
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db1961eb75c093584f2b63763ef8fee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfbe7f95b5d89f9409ec24536da9e826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00162188052e3eb32698366ea419a4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a4ae03acac90a3710b9790753ae0694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c99d50964ebca70927869a04136611.png)
A.![]() | B.![]() | C.![]() | D.不确定 |
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2023-01-05更新
|
761次组卷
|
8卷引用:江西省九江市2022-2023学年高一上学期期末考试数学试题
江西省九江市2022-2023学年高一上学期期末考试数学试题第九章 统计 章节验收测评卷-【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)(已下线)9.2.3-9.2.4 总体集中趋势的估计、总体离散程度的估计 (2)第九章《统计》单元达标高分突破必刷卷(培优版)(已下线)9.2.4 总体离散程度的估计(分层作业)-【上好课】2022-2023学年高一数学同步备课系列(人教A版2019必修第二册)(已下线)14.4 用样本估计总体(分层练习)(已下线)模块三 专题3 小题满分挑战练(3)(人教B) 福建省厦门双十中学2022-2023学年高一下学期第二次月考数学试题