1 . 已知等差数列
的前n项和
满足
,
.
(1)求
的通项公式;
(2)若数列
的前n项和为
.证明:
.
![](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/4e1c1cf53ef58604978dc71b9846ad46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7f12002611781ce9601baca8ae7ce3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfb8091a44e1edbc4dc5274a57cbd0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0dcd26b203cbac098ea9a6824f163b.png)
您最近一年使用:0次
2 . 已知
为等差数列,
为等比数列且公比大于0,
,
,
,
.
(1)求
和
的通项公式;
(2)设
,记数列
的前
项和为
,求
.
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe82b0229a120dcb4f093c0b73939a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45568a5071e784cd7ccc5eba45e7f15a.png)
(1)求
![](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/39fa275fa871b5e08dc62d3a07488920.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
3 . 在数列
中,
,对任意
,
.
(1)求数列
的通项公式.
(2)若数列
满足:
.
①求数列
的通项公式;
②令
,若
,求正整数
的值.
![](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/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af39ecf7c68d89e8c39545465cf7861.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89d331f1ea865411f716cf4578267ef.png)
①求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
②令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2ac4f452740eab97b9127c64952702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8edc08a85b79dd9023d8f6919fafd0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
4 . 已知数列
,
,满足
,
.
(1)令
,证明:数列
为等差数列,并求数列
的通项公式;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152c30dd1dd8e21901f8ba5979e801bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c800562a3f83b1594567ad211e41471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a3e535f9bafa50107345ccbfa6554c.png)
(1)令
![](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/57ef6d44448092ebdb9e4a49d866a749.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93d5a8d308095f977bbf2fcb9554c3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa5ec76469fc29727f3ceecef766829.png)
您最近一年使用:0次
2020-11-21更新
|
1149次组卷
|
5卷引用:吉林省通榆县第一中学2020-2021学年高三上学期期中考试数学(理)试题
名校
解题方法
5 . 已知
是公差不等于0的等差数列,
是等比数列
,且
.
(1)若
,比较
与
的大小关系;
(2)若
.
①判断
是否为数列
中的某一项,并请说明理由;
②若
是数列
中的某一项,写出正整数m的集合(不必说明理由).
![](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/c9fc82353331abee0828dee9b38c08f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd1721c727549b699f39a02cc2aa2d3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494a1444abd3f9441b30d999f65b3203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13423c094861baf4b759b7f3d8c3c226.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b400065fbaf8e7fbc286fe770608700d.png)
①判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac648580405ecaa29e91d45738a08af7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2020-11-15更新
|
256次组卷
|
2卷引用:北京师范大学第二附属中学2021届高三10月月考数学试题
名校
解题方法
6 . 已知数列
是无穷数列,若存在常数
,使得
对任意的
成立,则称数列
其有性质
.
(1)若数列
满足:
,其中
,是数列
的前
项和,试判断
是否具有性质
.
(2)若数列
是等差数列,且数列
具有性质
,求数列
的通项公式;
(3)若正整数数列
满足
,且
,若数列
具有性质
,求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf5776ec7059c208daf01ca48a34915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fce92044e29a9492af22510e55950e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c716096b5ab670c44b24bf0f2c91b6e7.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8370a173854471a3eb27637993a3d5d.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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c716096b5ab670c44b24bf0f2c91b6e7.png)
(2)若数列
![](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/798f460183e039e247123c5457cfe5e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)若正整数数列
![](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/f9b0dc5035b39a3eee94fb0a1a92c94c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077b277e97e03aa2ef58e749be738f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
7 . 已知等比数列{an}的前n项和为Sn,a1=1,且S3=3S2+1.
(Ⅰ)求数列{an}的通项公式;
(Ⅱ)若数列{an}为递增数列,数列{bn}满足
,求数列bn的前n项和Tn;
(Ⅲ)在条件(Ⅱ)下,若不等式
对任意正整数n都成立,求
的取值范围.
(Ⅰ)求数列{an}的通项公式;
(Ⅱ)若数列{an}为递增数列,数列{bn}满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a494920a4d1b5b1537c0a5d44ee09e7d.png)
(Ⅲ)在条件(Ⅱ)下,若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d9306d435850a663a0ed53e6faec7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2020-07-24更新
|
1257次组卷
|
4卷引用:黑龙江省哈师大附中2019-2020学年高一(下)期末数学试题
8 . 数列
中,
,且对于任意的
,有
.
(1)求数列
的通项公式;
(2)若数列
满足
,是否存在实数
使得对于任意
,都有
(
为常数)成立?若存在,求实数
的取值范围;若不存在,请说明理由.
![](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/765f8933b46c0fbcc19a436cb74e0b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c958dd01fabaa8fbf133df25c7dae4d.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec88229187f430b64ca2a113d8e0729f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24ca1b70dd330324c10763041d6890c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d085717d249e162e4878fd3ae45841a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2020-07-22更新
|
489次组卷
|
2卷引用:四川省南充高中2019-2020学年高一下学期第一次月考试题数学(理科)试题
9 . 已知函数
,
,
,数列
,
满足
,
,
,
.
(1)求证:数列
是等比数列;
(2)设
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d01cb00904ee16178c7c35d7e0a8d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4306fb6d5419322b4b7b9140e06e43a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac200a9106723cd0d4749339ea677e5d.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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a18635ed23167514f0f7c46501842e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dca0dce2d6d90836fbb47dcd344c901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fc82353331abee0828dee9b38c08f2.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3f946894e21775f9d2b4219ed627eb.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35102d1fe40ffc1d0a8bc354b9800f5d.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
2020-07-20更新
|
1267次组卷
|
5卷引用:2020届广东省汕头市高三第二次模拟数学(文)试题
2020届广东省汕头市高三第二次模拟数学(文)试题山东省枣庄市滕州一中2020-2021学年高三10月月考数学试题(已下线)重难点1 数列-2021年高考数学【热点·重点·难点】专练(山东专用)重庆市云阳江口中学校2021届高三上学期第三次月考数学试题(已下线)专题24 数列求和的常见方法-学会解题之高三数学万能解题模板【2022版】
10 . 已知
是公比
的等比数列,且满足
,
,数列
满足:
.
(1)求数列
和
的通项公式;
(2)令
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdefe767533b3368858d21233e65bf59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1054571e0bc599d64a89b63a49b574df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075e8e4119f560391c5dbf36823bef44.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5c8add44cdfdaf30bf39b2a123fcb23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2396c63685f469e9b9017ea05598fa5.png)
您最近一年使用:0次