1 . 已知数列
具有性质
:
, 都
,使得
.
(1)分别判断以下两个数列是否满足性质
,并说明理由;
(ⅰ)有穷数列
:
;
(ⅱ)无穷数列
:
;
(2)若有穷数列
满足性质
,且各项互不相等,求项数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1513eaa448529cd58c109c7cba21f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef87407d7df837d44f2780285383955b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab406d94b4907ab8a20ae3214628b045.png)
(1)分别判断以下两个数列是否满足性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(ⅰ)有穷数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305fba5be99a52f61dd8f868ec3c9f17.png)
(ⅱ)无穷数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b52595e3f2338ee60f0f024162d1da2.png)
(2)若有穷数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2 . 函数
的最小值及取得最小值时
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd0d2ddf02f569989540cdefc181e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.当![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
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解题方法
3 . 函数
的图像如图所示,定义域为
,其中
,
,当
时.图像是二次函数的一部分,其中顶点
,当
时,图像是指数函数的一部分.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/6648dea6-3531-4e14-9329-39f005d1cf7e.png?resizew=179)
(1)求函数
的解析式:
(2)求不等式
的解集:
(3)若
对于
,恒有
恒成立.求出
的取值范围(不要求计算过程).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86cace140f2c3588ab115837bbfc9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d381f8891b6b2d2417b7df2492eb3b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302e421a250119f34d8f3c9928730490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad324be3bebd9c8051c5f502df2b536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d381f8891b6b2d2417b7df2492eb3b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5d54ea50d01535318b10a9fa570931.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/6648dea6-3531-4e14-9329-39f005d1cf7e.png?resizew=179)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbc3dfb24fa1f2a3bbfdb74f5f91eaf.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681d6d27b23b1c41834d7516122f73f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aebfb85aae9dd1ada8c9bc10008f987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae828be829213bd6b66651dce99263c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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名校
解题方法
4 . 第十四届全国冬季运动会雪橇项目比赛于2023年12月16日至17日在北京延庆举行,赛程时间安排如下表:
(1)若小明在每天各随机观看一场比赛,求他恰好看到单人雪橇和双人雪橇的概率;
(2)若小明在这两天的所有比赛中随机观看三场,记
为看到双人雪橇的次数,求
的分布列及期望
;
(3)若小明在每天各随机观看一场比赛,用“
”表示小明在周六看到单人雪橇,“
” 表示小明在周六没看到单人雪橇,“
”表示小明在周日看到单人雪橇,“
”表示小明在周日没看到单人雪橇,写出方差
,
的大小关系.
12月16日 | 星期六 | 9:30 | 单人雪橇第1轮 |
10:30 | 单人雪橇第2轮 | ||
15:30 | 双人雪橇第1轮 | ||
16:30 | 双人雪橇第2轮 | ||
12月17日 | 星期日 | 9:30 | 单人雪橇第3轮 |
10:30 | 单人雪橇第4轮 | ||
15:30 | 团体接力 |
(2)若小明在这两天的所有比赛中随机观看三场,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc79c66ebaacd709ec9965b90a22b14.png)
(3)若小明在每天各随机观看一场比赛,用“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ca24d3954514ba5af32fe46b0d549c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616abe3c4e12021b7b3d36cac8523994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcde8e895e9f4bd5c125fbd75f7ad74a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2048aee109eb77fafabf9fbe378fa866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7061091fa7f06fa1438b0960e66a6bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b9b100f3a6ab8eff64b5e90b1bd736.png)
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2024-03-12更新
|
1042次组卷
|
3卷引用:2024届北京市延庆区高考一模数学试题
5 . 已知函数①
②
. 从这两个函数中选择一个、并完成以下问题.
(1)求
的解:
(2)在x轴上取两点
和
,设线段
的中点为C,过点A,B,C分别作x轴的垂线,与函数
的图象交于
,线段
中点为M.
(i)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845a9625056f54e2b623118dcbde919c.png)
(ii)判断
与
的大小.并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbc261343fd5e5fb0b93e54ee23333f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6ff19c4f3d3360749a6c8e372feccc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c66230dc7e2664b7b038028978093d.png)
(2)在x轴上取两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032606f32e41a9c38c5371438855be3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d2fbdadf087a4272514a0ca6ec8b4d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23fb90e09994fdc6ab02ed6ba664f31f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/382b953ed3bf25b6757cf6c2ec946d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291e1f1ee182b6ef4183649790fe84c7.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845a9625056f54e2b623118dcbde919c.png)
(ii)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd0bc6527169af7f0ad452e640adae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/108980d5833420777fa60c88cbd6c0f7.png)
您最近一年使用:0次
2024-03-07更新
|
334次组卷
|
4卷引用:北京市延庆区2023-2024学年高一上学期期末考试数学试卷
北京市延庆区2023-2024学年高一上学期期末考试数学试卷(已下线)8.1.3向量数量积的坐标运算-同步精品课堂(人教B版2019必修第三册)四川省广安市友实学校2023-2024学年高一下学期3月月考数学试题(已下线)第二章平面向量及其应用章末综合检测卷(新题型)-【帮课堂】(北师大版2019必修第二册)
名校
解题方法
6 . 为了了解某校高一学生一次体育健康测试的得分情况,一位老师采用分层抽样的方法选取了20名学生的成绩作为样本,来估计本校高一学生的得分情况,并以
,
,
,
,
分组,作出了如图所示的频率分布直方图,规定成绩不低于90分为“优秀”.
(2)从样本成绩优秀的
,
两组学生中任意选取2人,记为
,
中的学生为
,
中的学生为
,求这2人来自同一组的概率;
(3)从成绩在
的学生中任取3名学生记为A组,从成绩在
的学生它任取3名学生记为B组,这两组学生的得分记录如下:
A组:
; B组:
.
写出a为何值时,A、B两组学生得分的方差相等(结论不要求证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd6f1acdfc48fc594b25c027ce8e72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3634aec4ef008f6664f52a7a92d9b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df77e82fba3b3fe79fb17760a541667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0738024abc1a0993ca12a6112d8ac5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f411d8be30cfa2912989e6b08990643a.png)
(2)从样本成绩优秀的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0738024abc1a0993ca12a6112d8ac5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f411d8be30cfa2912989e6b08990643a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03a655e4aedad47c733a6c343f86b3ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0738024abc1a0993ca12a6112d8ac5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b48eb9133a090469a50cb72b098f08d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f411d8be30cfa2912989e6b08990643a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcf0f2f5795f0b8a333a176b8706117.png)
(3)从成绩在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3634aec4ef008f6664f52a7a92d9b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df77e82fba3b3fe79fb17760a541667.png)
A组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99e6f3f3cd83f6762eab72fd88b7e55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eceab3b65f2c1a09f190353e7b86686.png)
写出a为何值时,A、B两组学生得分的方差相等(结论不要求证明).
您最近一年使用:0次
2024-03-07更新
|
492次组卷
|
5卷引用:北京市延庆区2023-2024学年高一上学期期末考试数学试卷
北京市延庆区2023-2024学年高一上学期期末考试数学试卷(已下线)15.2 随机事件的概率-【帮课堂】(苏教版2019必修第二册)江西省宜春市丰城中学2023-2024学年高一下学期4月期中考试数学试题(已下线)重难点专题16 玩转古典概型-【帮课堂】(苏教版2019必修第二册)(已下线)专题06 概率-期末真题分类汇编(人教A版2019必修第二册)
7 . 已知方程组
的解集为
.
(1)若方程组的一个解为
,求
的值;
(2)若
时,求
;
(3)当
时,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb834a8b167f55c254e20d8f1a698be3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf04b4991cc8ef8ffb9d8ef31d54ba20.png)
(1)若方程组的一个解为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0d7fbcc396c7b646c31f60e32d9e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7bb2271f0c1ae6f267beff842fcc44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88edfcabd49166a6dae74eecbdafd35f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
8 . 已知函数
.
(1)若
,写出不等式
的解集;
(2)从下列条件中只选出一个条件作答,使得函数
在
上有最小值,把选出的条件填在横线上,并写出
的单调区间及最小值;__________.(若选择的条件没有最小值,则本小题不得分)
①
;②
;③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
(3)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0377ee50123c2b689ae92f391ab5f387.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)从下列条件中只选出一个条件作答,使得函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69abe959988e4c8c0739f5857ccfb0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
(3)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
您最近一年使用:0次
9 . 已知集合
(
且
),
,且
.若对任意
,当
时,存在
,使得
,则称
是
的
元完美子集.
(1)判断下列集合是否是
的3元完美子集,并说明理由;
①
;
②
.
(2)若
是
的3元完美子集,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d878c148fbe54dd59228fbf86eeb80ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/929f1ef224cb72ac5184598180681f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952f1e0ce5bd53a6d5e8bb07ea2da5f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2039559510c48efc83fe8c5b77f8d687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e676073a8d2acb1678fdc705e33f0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5ffeae78ae6fc8554ad8501cced2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d169a02afabbe304cf64b355bf71742a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)判断下列集合是否是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e15343967423a1b62a757e549b267b6.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd14cb27cbdb43c432f7493c34575c4.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5349bef4071e48a08e4dbbf0995e7c1e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d020cd453031ae9eede7961ec78f21a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad583995d85c7b83f2fb4e4124ff9b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e8ab57234dfc54a5315381c59c94f6.png)
您最近一年使用:0次
2023-08-05更新
|
775次组卷
|
9卷引用:北京市延庆区第二中学2023-2024学年高二上学期10月质量监测数学试题
北京市延庆区第二中学2023-2024学年高二上学期10月质量监测数学试题北京市密云区2022-2023学年高一下学期期末数学试题(已下线)高一上学期第一次月考解答题压轴题50题专练-举一反三系列北京市第八十中学2023-2024学年高一上学期(10月月考)阶段测评数学试题(已下线)难关必刷01集合的综合问题(3种题型40题专项训练)-【满分全攻略】(人教A版2019必修第一册)(已下线)专题01 集合及集合运算求参(2)北京市八一学校附属玉泉中2023-2024学年高一上学期期中考试数学试题(已下线)高一上学期期末考试解答题压轴题50题专练-举一反三系列(已下线)专题01 集合及集合运算求参(2)-【寒假分层作业】(人教A版2019必修第一册)
10 . 如图,四棱锥
中,底面
是梯形,
,
面
,
是等腰三角形,
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/16/5ecbc7a1-9f89-4cee-82e4-94808d144677.png?resizew=187)
(1)求证:
;
(2)设
与
所成的角为
,直线
与平面
所成的角为
,二面角
为
,从以下所给的三个条件中选出其中一个作为已知条件,求四棱锥
的体积.
①
; ②
; ③
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee90881c743e2cff2e3128d6bdb86174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/16/5ecbc7a1-9f89-4cee-82e4-94808d144677.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9829fc6685b59fdc609f32f30ebd9e6d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93fa313adc4ac7608ba9449fd755212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8d4017e1a37acb0c8e00508be472b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3fe9cff5ecb699469ed2c4bbb9b584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a065865e26095d6bf74c4959dc1fef4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d058392f42ed517529d4d243937837.png)
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2023-04-14更新
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1055次组卷
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3卷引用:北京市延庆区2023届高三一模数学试题