1 . 已知数列
,
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9acbe4bc9cfa96b9990e6637ca69b813.png)
(1)证明:
为等差数列,并求
通项公式;
(2)若
,记
前n项和为
,对任意的正自然数n,不等式
恒成立,求实数
的范围.
![](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/9acbe4bc9cfa96b9990e6637ca69b813.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25cbe66fe4e84b4022721122baab4a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d025d17b4c3c4f72b28d722c308028a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e569bec99bea2fe11eaaf5e4117d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2023-07-26更新
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4卷引用:广东省珠海市华中师范大学珠海附属中学2024届高三上学期9月月考数学试题
广东省珠海市华中师范大学珠海附属中学2024届高三上学期9月月考数学试题(已下线)专题突破卷17 数列求和-2宁夏中卫市中宁县第一中学2022-2023学年高二上学期10月月考数学试题(已下线)考点12 数列中的不等关系 2024届高考数学考点总动员【练】
2 . 已知数列
满足
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4916aa4b5aba2a51282bb1c46f662192.png)
(1)记
,求证:
为等比数列;
(2)设数列
满足:
,
,若不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4916aa4b5aba2a51282bb1c46f662192.png)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f2cd7832afe02641ca767c8f0b45a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1120926c7ec49540e3750e1986055da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1804cf59531c472c6f95d17c990f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e5c42eca2c5feb7c415c9af7b2f8fdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2023-10-13更新
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3卷引用:广东省广州市第七中学2024届高三上学期10月月考数学试题
广东省广州市第七中学2024届高三上学期10月月考数学试题广东省广州市越秀区2024届高三上学期十月月考数学试题(已下线)专题05 数列在高中数学其他模块的应用(九大题型+过关检测专训)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)
名校
解题方法
3 . 设正项数列
的前
项和为
,且
.
(1)求数列
的通项公式;
(2)记
的前
项和为
,求证:
.
![](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/78515a07797b245e751d0937e2cbb875.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25cbe66fe4e84b4022721122baab4a3.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/9c3fec47d2dd2b8099d86c87b6e57de8.png)
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2023-04-26更新
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5卷引用:广东省东莞市第四高级中学2024届高三上学期10月月考数学试题
广东省东莞市第四高级中学2024届高三上学期10月月考数学试题浙江省9+1高中联盟2022-2023学年高二下学期期中数学试题(已下线)【2023】【高二下】【期中考】【367】【高中数学】【马定超收集】(已下线)2023年高考全国甲卷数学(理)真题变式题16-20宁夏银川市第二中学2024届高三上学期年级统练四数学(理)试题
4 . 数列
满足
.
(1)求证:
是等比数列;
(2)若
,求
的前
项和为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f730300c9057ee07b9cf3718337f3183.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7f8eb20674ecddeb28e50b1a47f6f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2023-04-14更新
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7卷引用:广东省汕头市潮阳一中明光学校2022-2023学年高二下学期期中数学试题
广东省汕头市潮阳一中明光学校2022-2023学年高二下学期期中数学试题山西省太原市第五中学2023届高三一模数学试题(AB卷)(已下线)数学(全国乙卷文科)(已下线)安徽省(九师联盟)2023届二模数学试题变式题17-22河南省信阳市信阳高级中学2022-2023学年高二下学期6月月考数学试题山西省吕梁市兴县友兰中学2024届高三上学期12月月考数学试题专题02数列(第二部分)
名校
解题方法
5 . 已知数列
中,
,且满足
.
(1)证明:数列
为等比数列,并求数列
的通项公式;
(2)若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdf53108bee755f5aa9a34ea4d163e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd336807786813def408ab356a7590a5.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e1c06829bf8a351bf0d2d29d2889f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b9e45762fdcd4560ae282d377f4158.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/08eb71ecf8d733b6932f4680874dbbf3.png)
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2023-01-04更新
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7卷引用:广东省广州市白云中学2022-2023学年高二上学期期末数学试题
广东省广州市白云中学2022-2023学年高二上学期期末数学试题(已下线)江西省五市九校协作体2023届高三第一次联考文科数学试题变式题16-20甘肃省张掖市2022-2023学年高二下学期第一次全市联考数学试题(已下线)新高考卷02(已下线)拓展二:数列求和方法归纳(2)(已下线)第四章 数列章末重点题型归纳(3)安徽省黄山市2021-2022学年高二上学期期末数学试题
名校
解题方法
6 . 设等比数列
的前n项和为
,且
,
.
(1)求数列
的通项公式;
(2)在
与
之间插入
个实数,使这
个数依次组成公差为
的等差数列,设数列
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b03dd47b0469396a7a7aeae1c31eb5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/035937c12508091015aefe47f6c50519.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e40cd2f0276fd802a54b664f7b0c3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3468a665ac713ab7b400c672f19650a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e260b088f071983f254ce8f5163fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b91feac052afec740917a21ea7bfa5.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/0dcb54d353d1108a26536b44cab2b472.png)
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2022-02-11更新
|
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|
7卷引用:广东省湛江市2022-2023学年高二上学期期末数学试题
名校
解题方法
7 . 在数列
中,
,
,设
.
(1)证明:数列
是等差数列并求数列
的通项公式;
(2)求数列
的前
项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629e54076b5754d3309da6cdcebfefc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d3d55a85012933f91c5d8d27d8801d.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2020-02-13更新
|
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4卷引用:广东省广州市协和中学2022-2023学年高二下学期2月月考数学试题
广东省广州市协和中学2022-2023学年高二下学期2月月考数学试题湖南省衡阳市第八中学2022-2023学年高二上学期期末数学试题(已下线)模块三 专题7 大题分类练(数列)基础夯实练 期末终极研习室(高二人教A版)湖南师范大学附属中学2018-2019学年高一下学期6月月考数学试题