1 . 某班级测验均分
,根据检测结果可知
,若该班级40名学生,则60分以下的人数大约为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b603e354ed89d24cf7f2d7863a7b4bec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a07e2fc8eeed6f455d66ca78366eba09.png)
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解题方法
2 . 如图,两条足够长且互相垂直的轨道
相交于点
,一根长度为
的直杆
的两端点
分别在
上滑动(
两点不与
点重合,轨道与直杆的宽度等因素均可忽略不计),直杆上的点
满足
,则
面积的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d718b208bce3e2778a466b2ed8d5312f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532d9de08698f61d7c010805c61a4ec5.png)
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3 . 已知各项均不为0的数列
满足
(
是正整数),
,定义函数
,
是自然对数的底数.
(1)求证:数列
是等差数列,并求数列
的通项公式;
(2)记函数
,其中
.
(i)证明:对任意
,
;
(ii)数列
满足
,设
为数列
的前
项和.数列
的极限的严格定义为:若存在一个常数
,使得对任意给定的正实数
(不论它多么小),总存在正整数m满足:当
时,恒有
成立,则称
为数列
的极限.试根据以上定义求出数列
的极限
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39bf7b5dc247fe10b6bfd984413a5e6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8323901a49cac29afd7d62864f088077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbd9ea8ffdea8c77370ea3e5f563dc35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51fec2729d8e927de9392ee90d1e0389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6f0a55fa53bf5f8e6654897975bcf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3324481138f2dc750f9ad889054abe1.png)
(i)证明:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/416a72de4d0030203a867cc3b7b95d83.png)
(ii)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0857559ed421cc7c614708f34f9f3324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de777c4e44546bcfe26ad5b6bb418052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad481cbfb67ac9cdbc0537f3de23b022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856b137a34d2d5b20671b7a3c7a29606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9de1835c164233db8b623489fbda0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eded65284816fdf6bf335b0c2a78e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eded65284816fdf6bf335b0c2a78e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
您最近一年使用:0次
名校
解题方法
4 . 甲乙两人进行某项比赛
(1)若比赛结果有胜利、失败、平局三种,已知甲获胜的概率为
,甲不输的概率为
,求甲乙两人取得平局的概率;
(2)若比赛结果只有胜利、失败两种,已知甲获胜的概率为
(
),对于甲来说,一局定胜负和三局两胜两种比赛方式比较,试问哪种比赛方式对甲更有利?说明你的理由.
(说明:“三局两胜”是常见的比赛模式,指先赢得两局者为胜,做多三局结束)
(1)若比赛结果有胜利、失败、平局三种,已知甲获胜的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29be23f689eb01e57963495377501257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52dbd64028ab37a28942a961993ad21d.png)
(2)若比赛结果只有胜利、失败两种,已知甲获胜的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d55c4180ff39ca82cf2b0c02d70bb9.png)
(说明:“三局两胜”是常见的比赛模式,指先赢得两局者为胜,做多三局结束)
您最近一年使用:0次
2024-01-11更新
|
278次组卷
|
3卷引用:上海市徐汇区2023-2024学年高二上学期期末统考数学试卷
上海市徐汇区2023-2024学年高二上学期期末统考数学试卷江西省上饶市第一中学2023-2024学年高二下学期开学考试数学试题(已下线)专题07概率初步(续)--高二期末考点大串讲(沪教版2020选修)
解题方法
5 . 若函数的导函数
是以
为周期的函数,则称函数
具有“
性质”.
(1)试判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e2d7c958e99bcd9d7f251c19ee3544.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e915b67f8f747698b8b46d37bc453667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e234e10039bd038ff3fc0326fb9689e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e915b67f8f747698b8b46d37bc453667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1613d377a07850c72cbec354b7a3000f.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be114c655f251cc3fdccae5d4c520985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2480f87a11c4cd450bc9454ea7276722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee7588963c06b77260c4734844b0eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be114c655f251cc3fdccae5d4c520985.png)
(可用结论:若函数的导函数满足
,则
(常数).)
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解题方法
6 . 2023年杭州亚运会首次启用机器狗搬运赛场上的运动装备. 如图所示,在某项运动赛事扇形场地
中,
,
米,点
是弧
的中点,
为线段
上一点(不与点
,
重合).为方便机器狗运输装备,现需在场地中铺设三条轨道
,
,
.记
,三条轨道的总长度为
米.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/9eb07001-5f34-48ab-b0c2-346e89c60147.png?resizew=148)
(1)将
表示成
的函数,并写出
的取值范围;
(2)当三条轨道的总长度最小时,求轨道
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f788fb0059b7356dc6c7811f46057e66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f0a31ea2b1a279e1d50c3fba77d061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ada3bf3a5bd0b858fea04c4d77a720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/9eb07001-5f34-48ab-b0c2-346e89c60147.png?resizew=148)
(1)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)当三条轨道的总长度最小时,求轨道
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
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2023-12-13更新
|
404次组卷
|
2卷引用:上海市徐汇区2024届高三上学期一模数学试卷
7 . 已知数列
为无穷数列.若存在正整数
,使得对任意的正整数
,均有
,则称数列
为“
阶弱减数列”.有以下两个命题:①数列
为无穷数列且
(
为正整数),则数列
是“
阶弱减数列”的充要条件是
;②数列
为无穷数列且
(
为正整数),若存在
,使得数列
是“
阶弱减数列”,则
.那么( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed0d7c931d584b50943c631c88d1648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8076abd392ac92dc7e176b6baa9888b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0cdccedc73c13b1acf080cbd6b38247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4137c505b10698a442e98255f2fb2db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc450d9fb1c6099c6de1cfcb99bc25b.png)
A.①是真命题,②是假命题 | B.①是假命题,②是真命题 |
C.①、②都是真命题 | D.①、②都是假命题 |
您最近一年使用:0次
2023-12-13更新
|
671次组卷
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7卷引用:上海市徐汇区2024届高三上学期一模数学试卷
上海市徐汇区2024届高三上学期一模数学试卷 上海市上海师大附属宝山罗店中学2023-2024学年高二上学期期末诊断调研数学试题(已下线)专题10 等比数列单调性(已下线)第4章 数列(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)(已下线)4.3 数列-求数列通项的八种方法(八大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)(已下线)专题05 数列(四大类型题)15区新题速递(已下线)专题01 集合(15区真题速递)
8 . 设
分别是圆柱
的上、下底面
的中心,
是以
为顶点,
为底面的圆锥体
,若圆柱
的体积为1,那么圆锥
的公共部分的体积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d096cd7bd8a5a2219fd7dd166bbb8460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ce130782909a2048581c6f0c25e934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1fc903da7487dcd2f069b50a5cf2bd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6c835472ca59f2f5471811b7ecb9f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01028fb18979fabc88ffbccb7ef063d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b52faa6703492e49a2058ce6fc29f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357e0872d9e98d662a780e7686de86ee.png)
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2023-11-10更新
|
153次组卷
|
2卷引用:上海市上海中学2023-2024学年高二上学期期中数学试题
名校
9 . 下列说法正确的是__________ .
①一条直线和平面平行的充要条件是直线的方向向量垂直于平面的法向量.
②如果直线
与
是异面直线,那么向量
与
不共面
③两条异面直线的公垂线段,是连接两条异面直线所有线段中的最短线段.
④直三棱柱任意两个侧面的面积之和大于第三个侧面的面积.
①一条直线和平面平行的充要条件是直线的方向向量垂直于平面的法向量.
②如果直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1070a28cb9cb8553c29747d1993b16.png)
③两条异面直线的公垂线段,是连接两条异面直线所有线段中的最短线段.
④直三棱柱任意两个侧面的面积之和大于第三个侧面的面积.
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解题方法
10 . 如图,我们将一本书打开放置在桌面上(每页书都有一边恰好落在桌面上).根据我们所学的__________ 定理,我们可以证明书脊所在的直线
垂直于桌面.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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