1 . 某项测试有
道必答题,甲和乙参加该测试,用数列
和
记录他们的成绩.若第
题甲答对,则
,若第
题甲答错,则
;若第
题乙答对,则
,若第
题乙答错,则
.已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19fca3a54951441f67c18b21d1a36260.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](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/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea867f78d52b7382c38e8fc6e2e2a9c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779579670dc48b0c0a9d31ed4df1e8ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47198e0da35b71d989eb679b517158f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22cd4e24144887b41b2d5eede1cbb97b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7325f0500a3f719a3c6184422be73a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e8810d81198b0a48cdc551a7c5f2f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19fca3a54951441f67c18b21d1a36260.png)
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|
411次组卷
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3卷引用:上海交通大学附属中学2021-2022学年高一下学期5月线上月考数学试题
名校
解题方法
2 . 设
,
分别为等比数列
,
的前
项和.若
(
,
为常数),则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
![](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/707e4f53430a9bd4caf8a112af9bb9cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe7b2750448b78af0109d978b0f4143.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-10-25更新
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1736次组卷
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6卷引用:上海交通大学附属中学2021-2022学年高一下学期5月线上月考数学试题
上海交通大学附属中学2021-2022学年高一下学期5月线上月考数学试题河南省郑州市郊县2020-2021学年高二上学期期中考试数学(理)试题(已下线)专题27 等差数列与等比数列问题的精彩妙解-备战2022年高考数学一轮复习一网打尽之重点难点突破黑龙江省哈尔滨德强学校2021-2022高三(清北班)上学期期中线下考试数学(理)试题江苏省泰兴、如皋四校2021-2022学年高二下学期期末联考数学试题广东省中山市2022-2023学年高二下学期期末数学试题
3 . 如果有穷数列
(m为正整数)满足条件
,即![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d58e15de1b07667b44bb0e187d43965.png)
,我们称其为“对称数列”.例如,数列1,2,5,2,1与数列8,4,2,2,4,8都是“对称数列”.
(1)设
是项数为7的“对称数列”,其中
是等差数列,且
.依次写出
的每一项;
(2)设
是49项的“对称数列”,其中
是首项为1,公比为2的等比数列,求
各项的和S;
(3)设
是100项的“对称数列”,其中
是首项为2,公差为3的等差数列.求
前n项的和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f42beacb05b4e0ef7bc5054d963657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd77932c26ce24576308c4ed4ffaff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d58e15de1b07667b44bb0e187d43965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c410d893ae9b389262bcd6553ed02bbe.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a447e5baee4f7518706498d4aca7553b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37315fc505a5be225c5b2d0aa3f5025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88f01c3f7abc6fb390b5f9bcbeef700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d717398566e4a7769dc4bb6865195f0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45404a6c16a16968629c5e03a3fcdbc4.png)
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2022-11-09更新
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394次组卷
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3卷引用:上海市同洲模范学校2017-2018学年高二下学期3月月考数学试题
名校
解题方法
4 . 设等比数列
的公比
,前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209279b4f8ad60a23cb079a4211eedd5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d9b6c86435e0ceff94d8ad1cd03737.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/209279b4f8ad60a23cb079a4211eedd5.png)
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2023-02-08更新
|
1522次组卷
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21卷引用:上海市宝山区2017-2018学年高一下学期期末数学试题
上海市宝山区2017-2018学年高一下学期期末数学试题海南省临高县 临高二中 2017-2018学年 高二数学 必修5 等比数列的前n项和 双基达标练习题2018届高考数学高考复习指导大二轮专题复习:专题四 数列 测试题4人教A版 全能练习 不等式 模块结业测评(一)(已下线)北京市西城区第四中学2019-2020学年高三上学期10月月考数学试题湖南师大附中2020届高三下学期月考(七)理科数学试题江苏省镇江市名校2020-2021学年高三上学期10月月考数学试题江苏省镇江市扬中市高级中学2020-2021学年高三上学期第一次月考数学试题陕西省安康市2020-2021学年高三上学期10月联考文科数学试题内蒙古通辽市开鲁县第一中学2020-2021学年高二上学期期中考试数学(文)试题江西省上高二中2021届高三年级全真模拟考试数学(理)试题江苏省2021届镇江一中、镇中高三上学期第一次联考(月考)数学试题陕西省西安市鄠邑区第二中学2022-2023学年高二上学期第一次月考数学试题陕西省宝鸡市千阳县中学2022-2023学年高二上学期第一次月考数学试题陕西省西安市长安区第七中学2022-2023学年高二上学期第一次月考数学试题重庆市綦江南州中学校2022-2023学年高二上学期期末数学试题陕西省西安市西北工业大学附属中学2020-2021学年高三下学期4月月考理科数学试题河北省邯郸市大名县第一中学2023届高三下学期2月月考数学试题(已下线)专题16 等比数列-3(已下线)河南省南阳市六校联考2023-2024学年高二下学期4月期中考试数学试题变式题11-15北京市西城区北京师范大学附属实验中学2024届高三下学期6月热身练习数学试卷
5 . 等比数列2,6,…,的前10项和的值为______
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2卷引用:上海市宝山区2020-2021学年高二下学期期末数学试题
6 . 对于函数
,若
,则称
为数列
的“本源函数”
(1)设数列
的“本源函数”为
,且
,
,求实数m的值;
(2)已知数列
的“本源函数”为
,
,
,在数列
中删除数列
中的项后,余下的项按原来顺序组成数列
,求
;
(3)记
表示不超过实数u的最大整数.若数列
的“本源函数”为
,且
,
,
为数列
的前n项的和.证明:对满足
的任意实数a,b,数列
中有无穷多项属于开区间
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760415f9629beb699f527067c6c7575c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d2c1ac861aad057fbe7734cae19f1b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9369e65f7491aa6579a5e47ff3b30f67.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d01cb00904ee16178c7c35d7e0a8d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f8f7f0711e448f814d652a7ef34444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b81fe746d977b09f444dfbe623448a.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbef9b8bd0b3ac7573e2c9783186e982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5d2923970e8338161f8617e636a709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4123422b5a6621da6a3214aa8c3e2a.png)
![](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/c72cb42c64b5cb96d6d2ac7b2c5f9cb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a23dac2ae213b5f4879b14b26b9268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
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20-21高三下·上海浦东新·阶段练习
名校
7 . 若
是等比数列,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3290aa8429aab225354423a0105ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
您最近一年使用:0次
名校
解题方法
8 . 已知
为等差数列,前n项和为
,
是首项为2的等比数列,且公比大于0,
.
(1)求
和
的通项公式;
(2)求数列
的前n项和
;
(3)设集合
,
,将
的所有元素从小到大依次排列构成一个数列
,记
为数列
的前n项和,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300ccaf1f16ac5aa897af2bff05e721b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f0780a9737a78dcb06c5545c5d6639.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52c9237cb0b4acc568d4afb12997186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23110cdbb1310b057531f8a4af6a30c.png)
(3)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/131d80af7a889661b86aea6d61d74ba9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07323110f6d9927d09f8404036d3bbee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfadf7483681e66386d3a4cc2a6f818b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ec0c282d03d3c1e40e5192713605ce.png)
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名校
9 . 已知等比数列
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de19a41401b6fd32d88a782466e585f.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170b74434f9726be33895bbd3bfec4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ef06b8ea6bbf164ba71f3232601656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de19a41401b6fd32d88a782466e585f.png)
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2021-03-23更新
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126次组卷
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2卷引用:上海交通大学附属中学2020-2021学年高一下学期开学数学试题
名校
10 . 设数列
与
满足:
的各项均为正数,
.
(1)设
,若
是无穷等比数列,求数列
的通项公式;
(2)设
.求证:不存在递减的数列
,使得
是无穷等比数列;
(3)当
时,
为公差不为0的等差数列且其前
的和为0;若对任意满足条件
的数列
,其前
项的和
均不超过
,求正整数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191c5330aab76e1d5b6427f5ae241132.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ac6ad9c16b9a767940da9c2241413d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f65f1163dae0ce579536dbc538cef0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e021a223c85a5fe67380cf5d489ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2360f4c62f7f1173922e755529a00fae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd790534835ca2b765f156824a961c23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2360f4c62f7f1173922e755529a00fae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98de51986abddede978630e0db085330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08a01aed02ce1eaf1aaefaa0342b7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020-12-26更新
|
745次组卷
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6卷引用:上海市行知中学2022届高三下学期期中数学试题
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