2022·全国·模拟预测
1 . 已知函数
的定义域为R,且满足
,对任意实数
都有
,若
,则
中的最大项为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/517aa95a8c8ae859a2fea1956f109935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098413b386eea75e98684dcf9c92dfa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695950fe16f7972182bd2d0864e12feb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2022-12-05更新
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1241次组卷
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5卷引用:2023年普通高等学校招生全国统一考试数学领航卷(八)
(已下线)2023年普通高等学校招生全国统一考试数学领航卷(八)新疆维吾尔自治区乌鲁木齐市2023届高三三模数学(文)试题湖北省武汉市江岸区2022-2023学年高二上学期期末数学试题(已下线)专题2 数列的最大项与最小项 微点2 判断数列的最大(小)项之函数图象法与性质法湖北省武汉市华中科技大学附属中学2022-2023学年高二下学期2月月考数学试题
解题方法
2 . 已知
为实数,数列
满足:①
;②
.若存在一个非零常数
,对任意
,
都成立,则称数列
为周期数列.
(1)当
时,求
的值;
(2)求证:存在正整数
,使得
;
(3)设
是数列
的前
项和,是否存在实数
满足:①数列
为周期数列;②存在正奇数
,使得
.若存在,求出所有
的可能值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cdd8a3e3a27ae058085810cb6994142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb047a8096a11578133a9bd20b734fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2b94cbf8f1acc77ed2618d9ba5756a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3eead98a7980470f3345ccaa8384b9b.png)
(2)求证:存在正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c3a1aba8da22a13efe1d08c9de1449.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe3b025e582fd16562ca1da1fa69299b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
3 . 设正数列
的前n项和为
,满足
,则下列说法不正确的是( )
![](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/a9ce4a635bfa9f24fea52a1c487e2e53.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-06-13更新
|
1269次组卷
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3卷引用:辽宁省沈阳市第二十中学2022-2023学年高三上学期一模考试数学试题
4 . 已知等差数列
的前
项和为
,公差为1,且满足
.数列
是首项为2的等比数列,公比不为1,且
、
、
成等差数列,其前
项和为
.
(1)求数列
和
的通项公式;
(2)若
,求正整数
的值;
(3)记
,求数列
的前
项和
.
![](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/cc87b0223fb15e20ffa231bfbdd90260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57483e04fd1840c87ac5325157149877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502d6855cdd026069a6a7b73f43bc155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce0986eff55247b31f204481297ecef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b10f95645b84b98492620d0b630640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e54fa91d40e7e3aad98c994d73b9a7.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/e15526f7c892333030073b85fc3baee6.png)
您最近一年使用:0次
2022-06-01更新
|
2111次组卷
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7卷引用:天津市武清区杨村第一中学2022届高三下学期高考第一次热身练数学试题
天津市武清区杨村第一中学2022届高三下学期高考第一次热身练数学试题(已下线)2022年高考天津数学高考真题变式题10-12题(已下线)2022年高考天津数学高考真题变式题16-18题(已下线)4.3.3 等比数列的前n项和-2022-2023学年高二数学《基础·重点·难点 》全面题型高分突破(苏教版2019选择性必修第一册)(已下线)4.3.2.2 等比数列的前n项和的性质及应用(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第二册)天津市滨海新区塘沽第一中学2023届高三下学期十二校联考(二)数学模拟试题专题05数列求和(错位相减求和)
名校
解题方法
5 . 已知数列
满足
.
(1)求
的通项公式;
(2)在
和
中插入k个相同的数
,构成一个新数列
,
,求
的前45项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61e6dc2ce2677e214f85958e229fc390.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a382b81f0eb038ab3a695a9f036af3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2634c55078cb3eb4f92d31c6cb7eac07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46772d07f35e2d8aed7ff50895312b3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd5918045499f014531a9df562dce48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a0ca7cb01df3c8579bbdd8ca6012e7.png)
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2022-05-31更新
|
692次组卷
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2卷引用:四川省泸州市泸县第二中学教育集团2022届高考仿真考试(三)理科数学试题
6 . 已知正项数列
满足
,数列
的前n项和为
且满足
.
(1)求数列
,
的通项公式;
(2)设
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024b983da1052ac94629d933dd8210db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e3a9bb248d5c1580b04a35bf884100.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb870137c4df39cfa17b1736b8cc85d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5228ebc2dff4cf21fdace773273e8593.png)
您最近一年使用:0次
7 . 已知数列
是等差数列,且
,
,
分别是公比为2的等比数列
中的第3,4,6项.
(1)求数列
和
的通项公式;
(2)若数列
通项公式为
,求
的前100项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7eed64ac7823ef2dba2ab623d27a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc47e888b98c32dda07009b8c4b49bf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb518e31b9a4adf52552bb73f2a4a8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923d96adb0a69066fa21701408d7627a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08c9965a04c2a6de04e949a15762f372.png)
您最近一年使用:0次
解题方法
8 . 如果一个数列从第二项起,每一项与它前一项的差都大于2,则称这个数列为“
数列”.已知数列
满足:
,
,则数列
的通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
___________ ;若
,
,且数列
是“
数列”,则t的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf1b5b5f5f9269db4e3f748bd7f5348.png)
![](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/02ce9d5623b21817dd182b9058dc271a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e657ce17ffee05d4b7589961e50cedd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61943cdc3c6c702fbff21422f83d0cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf1b5b5f5f9269db4e3f748bd7f5348.png)
您最近一年使用:0次
9 . 记数列{
}的前n项和为
.已知
,___________.
从①
;②
;③
中选出一个能确定{
}的条件,
补充到上面横线处,并解答下面的问题.
(1)求{
}的通项公式:
(2)求数列{
}的前20项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8c4060c7a614a2f287e9fa8fd9f627.png)
从①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31148cf610ce41888d79538d1dafcb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/842b9a65ee998c6fa24ab651d90a9ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b3d3b1e4633d3f7da681788346c3be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
补充到上面横线处,并解答下面的问题.
(1)求{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)求数列{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde4c9452a81d3adc834c4c9bc53b73e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f710b0e6ccca316852bf3a94f68135.png)
您最近一年使用:0次
2022-05-11更新
|
1550次组卷
|
4卷引用:福建省泉州市2022届高三第五次质量检测数学试题
解题方法
10 . 将①
,
,②
,③
,
之一填入空格中(只填番号),并完成该题.
已知
是数列
前n项和,___________.
(1)求
的通项公式;
(2)证明:对一切
,
能被3整除.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbb03e9f93969580c6f07667c209779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b109fa86a3b571445e5352e89e0af67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3db132af8f7366d6b98f8c5609756a7.png)
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)证明:对一切
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235ed1dfea3ec3bc0c2d81a3cf66c202.png)
您最近一年使用:0次
2022-05-10更新
|
769次组卷
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7卷引用:四川省眉山市2022届高中第三次诊断性考试数学(文史类)试题
四川省眉山市2022届高中第三次诊断性考试数学(文史类)试题四川省乐山市2022届高三下学期第三次调查研究考试数学(文)试题1.4 数学归纳法(同步练习提高版)(已下线)数学归纳法(已下线)4.4 数学归纳法(1)1.5 数学归纳法7种常见考法归类(1)(已下线)4.4数学归纳法——课后作业(巩固版)