1 . 设
为数列
的前
项积,若
,且
,则当
取得最小值时,
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5feb6d9a2210df39446bcac1f5e37a91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8664455b60ee7d8c48d7b6f1118dbab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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名校
2 . 若等差数列
的前m项的和
为20,前3m项的和
为90,则它的前2m项的和
为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1752474698cd5466dd180df0a00ba9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa209ac86cd8c88e638cda47db5bfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ffd3e122e6c12db948aeedaea20fce.png)
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名校
3 . 已知数列
满足
,则数列
的通项公式为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7c766ef75799d9849cb40a1cd529fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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2023-12-24更新
|
1053次组卷
|
4卷引用:安徽省淮北市第一中学2023-2024学年高二上学期第三次月考数学试题
安徽省淮北市第一中学2023-2024学年高二上学期第三次月考数学试题(已下线)1.2.1 等差数列的概念及其通项公式(分层练习)-2023-2024学年高二数学同步精品课堂(北师大版2019选择性必修第二册)四川省眉山市仁寿县两校2023-2024学年高二下学期开学联考数学试题河南省南阳市华龙高级中学2023-2024学年高二下学期3月月考数学试题
4 . 某牧场2015年初牛的存栏数为1200头,以后每年存栏数的增长率为
,且在每年年底卖出90头牛,那么在2024年初牛的存栏数是多少_____________ .(结果保留整数,参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf62a2b3b2c4883a2421c8bf2a184d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64701f63893776c43af07e5d8efa50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe92d8b47318837a307f4f279ff78ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a333ea7e40b0cdfbedfe102b37888d0d.png)
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5 . 已知直线
与
相交于点
,直线
与
轴交于点
,过点
作
轴的垂线交直线
于点
,过点
作
轴的垂线交直线
于点
,过点
作
轴的垂线交直线
于点
,
,这样一直作下去,可得到一系列点
,
,
,
,
,记点
的横坐标构成数列
,给出下列四个结论:
①点
; ②数列
单调递增;
③数列
为等比数列; ④
.
其中所有正确结论的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d75e9b0329424f08758cd86fe72dc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb9b8e2ff79c75a12c73cf474df5f7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae863e7a1f1fed09f1075de4a817c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae863e7a1f1fed09f1075de4a817c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3300966c23d3c62e0c30327faf8163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
①点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fe66db7cd1a603298df7c219431957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d497e59ca415b9973ae8b07cd28e472.png)
③数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fa575eec471d20667624bd4e9f7924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b16a1cacd1be1014c6acb0267c0715.png)
其中所有正确结论的序号是
您最近一年使用:0次
解题方法
6 . 若等差数列
的前n项和为
,则该数列的公差为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/708fc2d77d447baf795983da99effe53.png)
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7 . 数列
是等差数列,且
,则实数a=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a401be041cecfe79da9b65bcfedffad.png)
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8 . 已知数列
的前n项和
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2032c50df6ebc68cec942b6f301e8f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
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9 . 落霞与孤鹜齐飞,秋水共长天一色,滕王阁,江南三大名楼之一,因初唐诗人王勃所作《滕王阁序》而名传千古,如图所示,在滕王阁旁的水平地面上共线的三点A,B,C处测得其顶点P的仰角分别为30°,60°,45°,且AB=BC=75米,则滕王阁的高度OP=________ 米.
您最近一年使用:0次
2023-12-20更新
|
634次组卷
|
8卷引用:第四章 三角函数与解三角形 第七节 解三角形应用举例
(已下线)第四章 三角函数与解三角形 第七节 解三角形应用举例(已下线)专题6.11 平面向量及其应用全章综合测试卷(基础篇)-举一反三系列(已下线)6.4.3 课时3 余弦定理、正弦定理应用举例-高一数学同步精品课堂(人教A版2019必修第二册)(已下线)考点20 三角函数的数学文化 --2024届高考数学考点总动员【练】(已下线)第11章 解三角形 章末题型归纳总结(1)-【帮课堂】(苏教版2019必修第二册)广西壮族自治区百色市德保县德保高中2023-2024学年高一下学期月考(一)(3月)数学试题(已下线)6.4.3.1 余弦定理——课后作业(巩固版)(已下线)6.4.3.1 余弦定理——课后作业(提升版)
10 . 消防车是救援火灾的主要装备,图①是一辆登高云梯消防车的实物图,图②是其工作示意图,起重臂
(20米
30米)是可伸缩的,且起重臂
可绕点
在一定范围内上下转动张角
,转动点
距离地面的高度
为4米.当起重臂
的长度为24米,张角
时,云梯消防车最高点
距离地面的高度
的长为_____ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b754a3364b759f773ed53177fd733dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14ec498f4e1b9fe21f9f50d90ca3c5bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ab7ec1feb0db35ba4040f40f070f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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