1 . 若等比数列
满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3939cb6a7baabdf0060ea4533ae7d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54cd1827a70cb56d2dace1e54192d873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
您最近一年使用:0次
2021-06-24更新
|
374次组卷
|
2卷引用:广西桂林市、崇左市2021届高三5月份数学(理)第二次联考试题
名校
2 . 已知等差数列
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715aaa320d35fd92b2dcd9573ab8b489.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff4c1eee35bf371539710db7b4b7ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715aaa320d35fd92b2dcd9573ab8b489.png)
您最近一年使用:0次
2021-06-08更新
|
1130次组卷
|
10卷引用:广西南宁市第三中学2021届高三收网考数学(理)试题
广西南宁市第三中学2021届高三收网考数学(理)试题广西南宁市第三中学2021届高三收网考数学(文)试题广西梧州市黄埔双语实验学校2022届高三上学期期中考试数学(理)试题四川省广元市2021届高三三模数学(理)试题四川省广元市2021届高三三模数学(文)试题(已下线)考点22 等差数列及其前n项和-备战2022年高考数学(理)一轮复习考点帮河南省新乡市辉县市第一高级中学2020-2021学年高二(培优班)下学期第二次阶段性考试数学(理)试题(已下线)考点21 等差数列及其前n项和-备战2022年高考数学(文)一轮复习考点帮四川省泸县第一中学2023届高三二诊模拟考试数学(文)试题四川省泸县第一中学2023届高三二诊模拟考试数学(理)试题
3 . 设Sn为正项数列{an}的前n项和,若对于任意m,n∈N+,n>m,都有
,且a2=2,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d7b5a64548a443ea02ac6188b86a95e.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50b31924aae7660106767b679e868059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d7b5a64548a443ea02ac6188b86a95e.png)
您最近一年使用:0次
4 . 已知数列
的前
项和为
,
,设数列|
的前
项和为
,若
对任意的
恒成立,则实数
的取值范围为______ .
![](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/4300dca231e2f4b37f70900b33439d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba57c83d526ac308d1461e80fcca9f36.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/997924336512ec08b4ff5d8221f609d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
5 . 已知数列
的前
项和为
,
,当
且
时
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc625e19e7ca2b9d097f67a3d472e47.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8323901a49cac29afd7d62864f088077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/690614293c058bdb329f4e1ee87499c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc625e19e7ca2b9d097f67a3d472e47.png)
您最近一年使用:0次
2021-05-12更新
|
393次组卷
|
3卷引用:广西来宾、玉林、梧州等2021届高三4月模拟联考数学(理)试题
6 . 在数列
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d114ede9331f5cca253873a008eb5d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次
2021-05-09更新
|
1379次组卷
|
12卷引用:云南、贵州、四川、广西四省2021届高三5月模拟联考数学(理)试题
云南、贵州、四川、广西四省2021届高三5月模拟联考数学(理)试题广西2021届高三5月联考数学(文)试题宁夏银川市第二中学2021届高三下学期二模数学(文)试题宁夏银川市第二中学2021届高三二模数学(理)试题山西省晋城市2021届高三三模数学(理)试题吉林省白山市2021届高三三模联考数学(文科)试题吉林省白山市2021届高三三模联考数学(理科)试题吉林省白山市2021届高三第四次联考数学(理)试题甘肃省白银市靖远县2021届高三第四次联考数学(理)试题甘肃省白银市靖远县2021届高三第四次联考数学(文)试题人教A版(2019) 选修第二册 突围者 第四章 第一节 数列的概念重庆市北碚区2022-2023学年高二上学期10月月考数学试题
7 . 设函数
,数列
满足
,若
是等差数列.则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ea50744a07c291f0ca686fe8805bd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760415f9629beb699f527067c6c7575c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
您最近一年使用:0次
2021-04-09更新
|
520次组卷
|
2卷引用:广西桂林市、崇左市、贺州市2021届高三高考4月联合模拟考试数学(理)试题
8 . 若数列
为等差数列,
为其前n项和,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61a0c59c1f42430701988e028c23ab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
您最近一年使用:0次
9 . 已知数列
的前n项和为
.且
,
是公差为
的等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b1ebe94ad16d80a21f7aa20b59458a.png)
_______ .
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90207deac50fb1606529b49047f990f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47beab88f3c7978932f2e13824d60191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b1ebe94ad16d80a21f7aa20b59458a.png)
您最近一年使用:0次
2021-04-01更新
|
753次组卷
|
4卷引用:广西2021届高三综合能力测试(CAT)(一)3月联考数学(文)试题
广西2021届高三综合能力测试(CAT)(一)3月联考数学(文)试题广西柳州市2021届高三下学期三模数学(文)试题广西柳州市2021届高三下学期三模数学(理)试题(已下线)专题09 数列的通项公式、数列求和及综合应用(练习)-1
10 . 已知命题
:
中,角A,B,C成等差数列,则
;命题
:若不等式
的解集为
,其中
,则不等式
的解集为
.在命题①
②
③
④
中,真命题是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13285b89cefa3dbe140ee32bff9b5621.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5f28031b036e4a37be931d5ff28368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02302cb85d5a04ac2e3133455f537b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72656c882b2830eeb8053ec18c0088f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9c72e257ee36ecd27b7816b84a8202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f16645d012f7a86474f7e4e89a5471df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e48ebdd742cb5d310c21a384d599bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6777065ed14d76944be5cb45d9e2c76.png)
您最近一年使用:0次