名校
解题方法
1 . 设等差数列
的公差为d,d为整数,前n项和为
,等比数列
的公比为q,已知
,
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)求数列
与
的通项公式;
(2)设
,求数列
的前n项和为
.
![](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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fe0f4e8a80a2840c0f6929a8a6351b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e96fafcc7b7f783d436f853449208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5518372eecda4c1ea288113b7ff4702b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751859e4f0b1cb2c94fd5cca373de9af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c2a5f8ec179b72b201c3c0a670612a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2019-04-02更新
|
4079次组卷
|
10卷引用:天津市耀华中学2021届高三(上)暑假验收数学试题
名校
解题方法
2 . 对于有限数列
,
,
,
,定义:对于任意的
,
,有:
(i )
;
(ii )对于
,记
.对于
,若存在非零常数
,使得
,则称常数
为数列
的
阶
系数.
(1)设数列
的通项公式为
,计算
,并判断2是否为数列的4阶
系数;
(2)设数列
的通项公式为
,且数列
的
阶
系数为3,求
的值;
(3)设数列
为等差数列,满足-1,2均为数列
的
阶
系数,且
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddcdb2da504ba468d10e26134b46327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d7da87286b3dd83f0e7d4e5b496eac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7c70fdfa2d88876d54feb6d890204e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f5d5bdce735c2dbe4bc07727c119459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf5776ec7059c208daf01ca48a34915.png)
(i )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8329865917b8a177cafbba3c80ee1563.png)
(ii )对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686b332872c51b433befe65fbe773380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4632dd98afcce0d49f5f4b438dab024d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf5776ec7059c208daf01ca48a34915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da493db80b421a09904f1aea6a8576a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(1)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a89d99d11a58a2e6ac83d0d6d2a5119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18841a2d420196560e6d4df505cc4063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecb42a8b2956bcbdc702f2675862405b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8040c494c55340314d0681aaa5a0cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-03-11更新
|
1157次组卷
|
14卷引用:北京市昌平区2021届高三二模数学试题
北京市昌平区2021届高三二模数学试题北京市顺义区第一中学2022届高三10月月考数学试题上海市实验学校2022届高三下学期开学考试数学试题北京市一六一中学2022届高三2月自主测试数学试题北京市2022届高三普通高等学校招生全国统一考试数学模拟试题北京市西城区第一六一中2021-2022学年高三下学期开学数学试题北京市海淀区首都师范大学附属中学2023届高三下学期2月阶段性质量检测数学试题(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)北京卷专题18数列(解答题)北京市一六一中学2022届高三下学期开学考数学试题北京市第五十五中学2023-2024学年高二上学期期中调研数学试题(已下线)专题03 条件存在型【讲】【北京版】2(已下线)4.2 等比数列(第2课时)(六大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)北京理工大学附属中学2023-2024学年高二下学期期中考试数学试卷
名校
解题方法
3 . 已知等差数列
的公差为
,前
项和为
,
,且
.
(1)求数列
的通项公式;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.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/dc482735a8eef09e8bf3ff9e96f8bba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7060ccfff46f9c70e441d4600cdc6d.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57cc21584834b198e803f680504863ec.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)
您最近一年使用:0次
2021-06-20更新
|
1883次组卷
|
6卷引用:河南省商丘市第一高级中学2020-2021学年高三5月月考文科数学试题
河南省商丘市第一高级中学2020-2021学年高三5月月考文科数学试题(已下线)4.2等差数列(A 基础培优练)-2021-2022学年高二数学同步双培优检测(苏教版2019选择性必修第一册)(已下线)6.4 求和方法(精讲)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)河南省濮阳市第一高级中学2021-2022学年高二下学期第一次质量检测数学(理)试题江西省余干县黄金埠中学2022-2023学年高二下学期期中考试数学试题江西省丰城中学2023-2024学年高二(创新班)上学期第一次10月段考数学试题
解题方法
4 . 已知
为数列
的前
项和,数列
是等差数列,且
,
.
(1)求
的通项公式;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0519af3f19dde038fab2e68b5e2a5387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/584ddced7e3bfee1fd29cfeb4c4cfa00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf40ffa2fbbe8cac064039ec1d4b0d8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb058ef89a503348b9f5a89e5fa949b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2021-03-10更新
|
2118次组卷
|
7卷引用:陕西省榆林市2021届高三下学期二模理科数学试题
陕西省榆林市2021届高三下学期二模理科数学试题陕西省榆林市2021届高三下学期二模文科数学试题(已下线)专题1.3 数列-常规型-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)精做02 数列-备战2021年高考数学(理)大题精做贵州省黔东南州2021届高三高考模拟考试数学(文)试题贵州省黔东南州2021届高三高考模拟考试数学(理)试题(已下线)解密11 数列的前n项和及其应用(分层训练)-【高频考点解密】2021年高考数学(文)二轮复习讲义+分层训练
名校
解题方法
5 . 已知等差数列
的前
项和为
,且
,______
请在①
;②
,③
这三个条件中任选一个补充在上面题干中,并回答以下问题.
(1)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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa54a479e4178d698818f69d859fe13.png)
请在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a0eecb5b800fce9ae10aed86ffee62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3136b43fee5329ab97a7b1c6f7a9056d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5731f65834e58bb01c8d21a695e395ce.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28bdbde4eb7e4d4033bb9053b6c806e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2021-05-29更新
|
1931次组卷
|
7卷引用:2021届高考冲刺金卷(新课改5月)数学试题
名校
6 . 已知在等差数列
中,公差
,其前n项和为
,
,且
.
(1)求数列
的通项公式;
(2)求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a06c2b249035369cff1a9febe23f5d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4444a8e22fec6428ac5bc07f33b6194.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91adba8efbf964e9e35547b0fd0ea36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2021-10-22更新
|
1791次组卷
|
6卷引用:北师大版(2019) 选修第二册 名师精选 第二单元 等差数列 A卷
北师大版(2019) 选修第二册 名师精选 第二单元 等差数列 A卷(已下线)卷01 数列的概念-【重难点突破】2021-2022学年高二数学名校好题汇编同步测试卷(人教A版选择性必修第二册)(已下线)卷02 等差数列A卷·基础达标-【重难点突破】2021-2022学年高二数学名校好题汇编同步测试卷(人教A版选择性必修第二册)黑龙江省哈尔滨市第一中学校2021-2022学年高三上学期期中考试数学(理科)试题人教B版(2019) 选修第三册 名师精选 第二单元 等差数列 A卷广东省东莞市石竹实验学校2023-2024学年高二上学期12月月考数学试题
名校
7 . 已知等比数列
的前
项和为
,若
,
.
(1)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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbddd4c506ce0cb04dfb117415c682f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48386e712c13015795b5be174ec6187f.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7584dd4a4b500c9d0b6ba28c02f9a46.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)
您最近一年使用:0次
2021-03-22更新
|
1939次组卷
|
7卷引用:辽宁省辽南协作体2019-2020学年高三上学期期末考试数学文试题
辽宁省辽南协作体2019-2020学年高三上学期期末考试数学文试题(已下线)押第20题数列-备战2021年高考数学临考题号押题(浙江专用)(已下线)专题09 数列(重点)-2020-2021学年高二数学下学期期末专项复习(北师大版2019选择性必修第一册、第二册)四川省内江市2020-2021学年高一下学期期末数学试题四川省广安市武胜烈面中学校2021-2022学年高二上学期数学(文)入学考试试题天津市宁河区芦台第一中学2020-2021学年高二下学期阶段质量检测(一)数学试题广东省茂名市电白区2023-2024学年高二上学期期末质量监测数学试题
名校
解题方法
8 . 设数列
的前n项和为
,且满足
,
.
(1)求数列的通
项公式:
(2)若
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3903653955c424d3f6135edc5b47e231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e38fed17b7d587ac608b0dffe998de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a679189efc1f5fce1b73d863a6f4195.png)
(1)求数列的通
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9b4ffe89ef6e6f086272392c553fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2022-01-25更新
|
1158次组卷
|
5卷引用:江苏省G4(苏州中学、扬州中学、盐城中学、常州中学)2021-2022学年高三上学期12月联考数学试题
9 . 等差数列
中,
,
.
(1)求数列
的通项公式;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2862328c64e24005603dfe1911b47c4.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb201779d8d0b5db996db8bf63c2581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ee9273cc82d57d99a21fb9c4953d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2022-07-24更新
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1120次组卷
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9卷引用:第4章 等差数列(A卷·夯实基础)-2021-2022学年高二数学同步单元AB卷(苏教版2019选择性必修第一册)【学科网名师堂】
(已下线)第4章 等差数列(A卷·夯实基础)-2021-2022学年高二数学同步单元AB卷(苏教版2019选择性必修第一册)【学科网名师堂】【全国百强校】黑龙江省哈尔滨市哈尔滨师范大学附属中学2018-2019学年高一下学期第一次月考数学试题2020届山东实验中学高三第二次诊断性考试数学试题(已下线)第02章等差数列(A卷基础卷)-2020-2021学年高二数学必修五同步单元AB卷(苏教版,新课改地区专用)海南省琼海市嘉积第三中学2022届高三下学期第二次月考数学试题江苏省盐城市第一中学2022-2023学年高二上学期第二次学情调研考试数学试题(已下线)4.2 等差数列(3)(已下线)第3讲 等差数列的前 项和及性质10大题型(5)福建省宁德第一中学2022-2023学年高二上学期月考(二)数学试题
名校
解题方法
10 . 已知
是数列
的前
项和,且
.
(1)求
;
(2)求数列
的前
项和为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.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/44b1a060575b0a4bd653b12b2948cd98.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91adba8efbf964e9e35547b0fd0ea36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2020-12-08更新
|
2539次组卷
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5卷引用:云南省玉溪第一中学2020-2021学年高二4月月考数学(理)试题
云南省玉溪第一中学2020-2021学年高二4月月考数学(理)试题河南省长垣市第十中学2020-2021学年高二上学期十月调研考试数学(理)试题河南省长垣市第十中学2020-2021学年高二上学期十月调研考试数学(文)试题(已下线)第04讲 复习课-数列-【寒假自学课】2022年高二数学寒假精品课(苏教版2019选择性必修第二册)(已下线)一轮复习适应训练卷(9)-2022年暑假高二升高三数学一轮复习适应训练卷 全国通用