名校
解题方法
1 . 已知数列
的前
项和为
,且
,若
,则正整数
的最小值是( )
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f9cc23318dc467b57a23700aa24aafe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29da074dbb943ee441f0d0a3f62853b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.9 | B.10 | C.11 | D.12 |
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3卷引用:模块五 专题2 全真基础模拟2(人教B版高二期中)
2 . 已知正项数列
的前
项和为
,
,且
.
(1)求
的通项公式;
(2)若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e68f27ba7c2c390fb7ace44262d6fa96.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eaa4dd44b5d8e3d1f608ecb66b8362b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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7卷引用:四川省绵阳中学2023-2024学年高二下学期第二学月月考(5月)数学试题
四川省绵阳中学2023-2024学年高二下学期第二学月月考(5月)数学试题河北省邯郸市2024届高三下学期学业水平选择性模拟考试数学试题(已下线)数学(江苏专用02)(已下线)5.3 数列的求和问题(高考真题素材之十年高考)河北省邯郸市2024届高三第四次调研监测数学试题辽宁省辽阳市2023-2024学年高三下学期二模数学试卷江西省部分学校2024届高三下学期5月月考数学试题
3 . 已知数列
满足
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4ed5a2e53b4532809a2819d9186fef.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c087106fea664d948c6b07539bc4b85b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314501f06c7e4bf3112fe41ecac7be68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4ed5a2e53b4532809a2819d9186fef.png)
您最近一年使用:0次
名校
4 . 已知数列
满足
,对任意
都有
,且对任意
都有
,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d80e57609208d51d61832e794e9065d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e64f27fd4b715b03a88b82f8f6f3dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32e2f964bb664deba92b0f9ea5f0d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff66b280badee6f44a142cc1c4a9f3cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a5945ce5c2114af8c18718ca8dc899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7卷引用:模块五 专题4 全真能力模拟4(人教B版高二期中研习)
(已下线)模块五 专题4 全真能力模拟4(人教B版高二期中研习)(已下线)模块二 难点痛点归纳与突破专题1 数列中最值、范围问题【高二人教B版】(已下线)模块二 专题2 数列中最值、范围问题【高二北师大版】辽宁省大连市滨城高中联盟2023-2024学年高二下学期期中考试数学试卷浙江省宁波市2023-2024学年高三下学期高考模拟考试数学试题(已下线)压轴题05数列压轴题15题型汇总-1(已下线)4.1数列的概念(1)
名校
解题方法
5 . 已知等差数列
的公差为2,记数列
的前
项和为
且满足
.
(1)证明:数列
是等比数列;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/d7183acf1ce718525286275f75647abe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5608193360ab18b5d6e2331736ecd4b.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3f946894e21775f9d2b4219ed627eb.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec4bdc2a6d4fc387dc621f0b5a268c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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3卷引用:江西省南昌市第二中学2023-2024学年高二下学期期中考试数学试卷
名校
解题方法
6 . 入冬以来,东北成为全国旅游话题的“顶流”.南方游客纷纷北上,体验东北最美的冬天.某景区为给顾客更好的体验,推出了A和B两个套餐服务,并在购票平台上推出了优惠券活动,顾客可自由选择A和B两个套餐之一,下表是该景区在购票平台10天销售优惠券情况.
经计算可得:
,
,
.
(1)由于同时在线人数过多,购票平台在第10天出现网络拥堵,导致当天顾客购买的优惠券数量大幅减少,现剔除第10天数据,求y关于t的回归方程(精确到0.01),并估计第10天的正常销量;
(2)假设每位顾客选择A套餐的概率为
,选择B套餐的概率为
,其中A套餐包含一张优惠券,B套餐包含两张优惠券,截止某一时刻,该平台恰好销售了n张优惠券,设其概率为
,求
;
(3)记(2)中所得概率
的值构成数列
.
①求数列
的最值;
②数列收敛的定义:已知数列
,若对于任意给定的正数ε,总存在正整数
,使得当
时,
,(a是一个确定的实数),则称数列
收敛于a.根据数列收敛的定义证明数列
收敛.
回归方程
中斜率和截距的最小二乘估计公式分别为:
,
.
日期t | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
销售量y(千张) | 1.9 | 1.98 | 2.2 | 2.36 | 2.43 | 2.59 | 2.68 | 2.76 | 2.7 | 0.4 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7aa9ff47d480f4cb751e0a9c2675f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0064de1b957bc9b668565180e34f6f19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f36001b6081f8168466384adb24065c.png)
(1)由于同时在线人数过多,购票平台在第10天出现网络拥堵,导致当天顾客购买的优惠券数量大幅减少,现剔除第10天数据,求y关于t的回归方程(精确到0.01),并估计第10天的正常销量;
(2)假设每位顾客选择A套餐的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
(3)记(2)中所得概率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c5e30c271fa4d9edb261af20ba7352.png)
①求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5d30ff1e7dd051d15a71b45c6b67b2.png)
②数列收敛的定义:已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06b29c30c04f47bba08c05796ee2a363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4beddd5cf338ff6a8dbbd76979a2777b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d8dd6a4f939f10fbe918ef9ca82afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5d30ff1e7dd051d15a71b45c6b67b2.png)
回归方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cf74bbdee085c44778ac6191e5016b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99aa913b0739360978f2aa9f75711e44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58291bd91befe1061530246da983727.png)
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2024-04-17更新
|
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|
2卷引用:吉林省长春市第二中学2023-2024学年高二下学期5月期中考试数学试题
解题方法
7 . 入冬以来,东北成为全国旅游和网络话题的“顶流”.南方的小土豆们纷纷北上体验东北最美的冬天,这个冬天火的不只是东北的美食、东北人的热情,还有东北的洗浴中心,拥挤程度堪比春运,南方游客直接拉着行李箱进入.东北某城市洗浴中心花式宠“且”,为给顾客更好的体验,推出了
和
两个套餐服务,顾客可自由选择
和
两个套餐之一,并在App平台上推出了优惠券活动,下表是该洗浴中心在App平台10天销售优惠券情况.
经计算可得:
,
,
.
(1)因为优惠券购买火爆,App平台在第10天时系统出现异常,导致当天顾客购买优惠券数量大幅减少,现剔除第10天数据,求
关于
的经验回归方程(结果中的数值用分数表示);
(2)若购买优惠券的顾客选择
套餐的概率为
,选择
套餐的概率为
,并且
套餐可以用一张优惠券,
套餐可以用两张优惠券,记App平台累计销售优惠券为
张的概率为
,求
;
(3)记(2)中所得概率
的值构成数列
.
①求
的最值;
②数列收敛的定义:已知数列
,若对于任意给定的正数
,总存在正整数
,使得当
时,
,(
是一个确定的实数),则称数列
收敛于
.根据数列收敛的定义证明数列
收敛.
参考公式:
,
.
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
日期![]() | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
销售量![]() | 1.9 | 1.98 | 2.2 | 2.36 | 2.43 | 2.59 | 2.68 | 2.76 | 2.7 | 0.4 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/decf6657efa807fc90353c5e6be0a263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0064de1b957bc9b668565180e34f6f19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f36001b6081f8168466384adb24065c.png)
(1)因为优惠券购买火爆,App平台在第10天时系统出现异常,导致当天顾客购买优惠券数量大幅减少,现剔除第10天数据,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)若购买优惠券的顾客选择
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
(3)记(2)中所得概率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd7841ef44b17863697517fb5f3039d.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
②数列收敛的定义:已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711c92626a97e6b778b3aa86e663ee97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ccd4537f4dee2050ade38b972eb9b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985dc26a89252b2e8dea815c529a2ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512e8bacfff15253901cd216a1e42013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5a325806df1a1c3e7ce609fe99085f.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa225ad36ee50c40869d87f694b6c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58291bd91befe1061530246da983727.png)
您最近一年使用:0次
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|
1694次组卷
|
4卷引用:江西省宜春市丰城市第九中学2023-2024学年高二下学期4月期中考试数学试题
江西省宜春市丰城市第九中学2023-2024学年高二下学期4月期中考试数学试题东北三省四市教研联合体2024届高考模拟(一)数学试卷东北三省四城市联考暨沈阳市2024届高三下学期数学质量检测(二)(已下线)专题03 第七章 随机变量及其分布列--高二期末考点大串讲(人教A版2019)
解题方法
8 . 已知数列
满足
,且
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0469639f526600b0ead50fd910658fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fc336b4a83bf6d66c4afcc431597f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/003bd6e3873ced5085aa15943dcc6148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.253 | B.506 | C.1012 | D.2024 |
您最近一年使用:0次
9 . 在数列
中,
,则“
”是“
是递增数列”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80074c78f714d3caf03f7ee0283c857d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9821a9453a5583dbf492fb6ab6c0a0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2024-04-13更新
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3卷引用:河南省焦作市博爱县第一中学2023-2024学年高二下学期4月期中考试数学试题
河南省焦作市博爱县第一中学2023-2024学年高二下学期4月期中考试数学试题河南省名校联考2023-2024学年高二下学期4月月考数学试题(已下线)专题1 数列的单调性与最值(范围)问题【讲】(高二期末压轴专项)
10 . 已知数列
满足
.
(1)求
的通项公式;
(2)若
,记数列
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bac201070d8847b581304a105f882c5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f4235a3593c007b5c3295627c3a6c4.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54fbf9c064d2259638f751e77686269.png)
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