1 . 数列
依次为:1,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,…,其中第一项为
,接下来三项均为
,再接下来五项均为
,依此类推.记
的前
项和为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158b045c6172c4178d7aa52083e1489f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158b045c6172c4178d7aa52083e1489f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5296c0056db0e2b5331c9b9a6d45962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.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)
A.![]() | B.存在正整数![]() ![]() |
C.![]() | D.数列![]() |
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7卷引用:湖北省武汉市部分学校2021-2022学年高三上学期9月起点质量检测数学试题
2022高三·全国·专题练习
名校
解题方法
2 . 数列
满足
,
,若
,且数列
的前
项和为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8099bd4e5087d2947ce09ffd7abd86d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e17b3a240d38a30f9575f447184cae.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30eb42578f654fb61e826026d2199751.png)
A.64 | B.80 | C.![]() | D.![]() |
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5卷引用:黑龙江省哈尔滨市第九中学校2023-2024学年高三下学期开学考试数学试题
黑龙江省哈尔滨市第九中学校2023-2024学年高三下学期开学考试数学试题(已下线)专题7.8 数列求通项公式(小题)-2022届高三数学一轮复习精讲精练陕西省西安中学2021届高三下学期第五次模拟数学(理)试题(已下线)第2讲 数列通项与求和(练)-2022年高考数学二轮复习讲练测(新教材地区专用)(已下线)专题11 数列前n项和的求法 微点10 数列前n项和的求法综合训练
3 . 记数列{an}的前n项和为Sn,已知a1=1,Sn+1=4an+1.设bn=an+12an.
(1)证明:数列{bn}为等比数列;
(2)设cn=|bn100|,Tn为数列{cn}的前n项和,求T10.
(1)证明:数列{bn}为等比数列;
(2)设cn=|bn100|,Tn为数列{cn}的前n项和,求T10.
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5卷引用:广东省佛山市第四中学2023届高三下学期开学考试数学试题
名校
解题方法
4 . 设数列
的前
项的和为
,且
,记
为数列
中能使
成立的最小项,则数列
的前
项之和为_______________ .
![](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/204fe825361c413ddc828c5505476789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c39c6d28829c2c3048634480924f0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c320a0619c63a5b650a1a94c0a5679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b184c94e38f1e5dbe750b2168c2a37.png)
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2卷引用:江苏省南京市2020-2021学年高二下学期期初数学试题
5 . 意大利著名数学家斐波那契在研究兔子繁殖问题时,发现有这样一列数:1,1,2,3,5,…,其中从第三项起,每个数等于它前面两个数的和,后来人们把这样的一列数组成的数列
称为“斐波那契数列”,记
为数列
的前
项和,则下列结论正确的是( )
![](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/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2020-10-28更新
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16卷引用:辽宁省六校2021-2022学年高三上学期期初联考数学试题
辽宁省六校2021-2022学年高三上学期期初联考数学试题湖北省六校2020-2021学年高三上学期10月联考数学试题江苏省苏州市张家港市外国语学校2020-2021学年高三上学期期中模拟测试数学试题广东省阳江市阳春市第一中学2020-2021学年高二上学期第三次月考数学试题广东省深圳市第二高级中学2020-2021学年高二上学期第二学段考试数学试题江苏省南通市海门中学2020-2021学年高三上学期10月月考数学试题江苏省南通市天星湖中学2020-2021学年高二上学期12月月考数学试题(已下线)专题5.1 数列基础(B卷提升篇)-2020-2021学年高二数学选择性必修第三册同步单元AB卷(新教材人教B版)(已下线)考点39 数列的综合应用-备战2021年高考数学经典小题考前必刷(新高考地区专用)(已下线)专题04 数列(数学思想与方法)-备战2022年高考数学二轮复习重难考点专项突破训练(全国通用)(已下线)专题3 数列的综合问题-学会解题之高三数学321训练体系【2022版】(已下线)考点15 数列综合问题-1-(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)浙江大学附属中学丁兰校区2021-2022学年高二上学期期末数学试题(已下线)专题11 数列前n项和的求法 微点4 裂项相消法求和(二)(已下线)数列的综合应用(已下线)5.4数列的应用(分层练习,8大题型)-2023-2024学年高二数学同步精品课堂(人教B版2019选择性必修第三册)
名校
解题方法
6 .
为数列
的前
项和满足:
.
(1)设
,证明
是等比数列;
(2)求
.
![](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/f68c466e8bc7621b3523c49a30d1bd55.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e680f28daa101a42903ef44cf6e6894a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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4卷引用:河北省石家庄市第二中学2019-2020学年高三下学期教学质量检测(开学考试)数学(理)试题
7 . 已知有穷数列A:
(
且
).定义数列A的“伴生数列”B:
,其中
(
),规定
,
.
(1)写出下列数列的“伴生数列”:
①1,2,3,4,5;
②1,
,1,
,1.
(2)已知数列B的“伴生数列”C:
,
,…,
,…,
,且满足
(
,2,…,n).
(i)若数列B中存在相邻两项为1,求证:数列B中的每一项均为1;
(ⅱ)求数列C所有项的和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55aea2d6309205fe59687ea3440bb2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edfe398651d365506cabd498ee5d1556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860a70d427b4c46206e43f17299e9b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11829c0cd3e74ffdf951e2d484718d9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b740bc48c9718a294c11a1485fd14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897b606fdc64a88a0938d3d60c3ea3e9.png)
(1)写出下列数列的“伴生数列”:
①1,2,3,4,5;
②1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(2)已知数列B的“伴生数列”C:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7936359df4c926b72b48c6fdae55f12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76f79be89b8c6227b68eded6b675546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e5dfcc28321b563a8012ec2899c502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d84a2027dc4157991c40673b6b4d23a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
(i)若数列B中存在相邻两项为1,求证:数列B中的每一项均为1;
(ⅱ)求数列C所有项的和.
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2020-05-12更新
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2卷引用:北京市第五中学2023届高三上学期第一次阶段检测数学试题
12-13高一下·四川成都·阶段练习
名校
8 . 已知数列
的通项公式为
,设其前n项和为
,则使
成立的自然数n
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4acfae9db9e2f0e7904e0614c53a553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572ad94be91581e4ab3c92ef4be8cadb.png)
A.有最小值63 | B.有最大值63 |
C.有最小值31 | D.有最大值31 |
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2020-02-28更新
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7卷引用:2016届辽宁省五校协作体高三上学期期初考试文科数学试卷
名校
9 . 若定义在R上的函数
满足:对于任意实数x、y,总有
恒成立,我们称
为“类余弦型”函数.
已知
为“类余弦型”函数,且
,求
和
的值;
在
的条件下,定义数列
2,3,
求
的值.
若
为“类余弦型”函数,且对于任意非零实数t,总有
,证明:函数
为偶函数,设有理数
,
满足
,判断
和
的大小关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b0552c4870a3d5da4531c66c9e0998c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9535576eccc7f217fadcfe547efe35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a77c4d65f01e583b2f6c5ea97c3e5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/687421a4825fb98630a0647520129942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68b86d6227320642dc65e23837668bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63dfad2cc3e89a54167be3a1b65c67c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2c8508a530cc066c2a93838e3bf07f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91882eb813ad04a08dc0b58a4b50a5da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040135d64192de075ba0cc9f11ddbc9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa33c2bd791339d32821077846605d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78c60f95efd63c0183315324d10ee29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed46533654ddbd25e8eaba7c3ada0533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e27e84da7c25bef88187f2ffaea3bfc.png)
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|
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3卷引用:上海市七宝中学2018-2019学年高三上学期摸底考试数学试题
名校
10 . 已知
为数列
的前
项和,
,
,平面内三个不共线的向量
,
,
满足
,若点
,
,
在同一直线上,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9b30c3d7cc1e41af67e909df3f39830.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911c0a2ab5e2e85f1ad267f41cb96b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794efd8cf0cc386faa170d01f357b1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7195a0b5b59c9462b9faaf5a9fcfc6e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b855acafb6c888420224f6f052f416c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9b30c3d7cc1e41af67e909df3f39830.png)
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2卷引用:上海市闵行区七宝中学2018-2019学年高二下学期开学考试数学试题