1 . 数列
中,
,
.
(1)求证:存在
的一次函数
,使得
成公比为2的等比数列;
(2)求
的通项公式;
(3)令
,求证:
.
![](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/de9270716cb03e4277232f75272790de.png)
(1)求证:存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9b45b61ad94b1cd444bbc5e52b545e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb381fb2e31d337bd434fdb455f5acb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113b99818fd5706165bb9f52aab06eb0.png)
您最近一年使用:0次
2 . 已知数列
满足
,
,
.
(1)若
.
①求数列
的通项公式;
②证明:对
, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef065f95b2ebebad9dfccdff104e297.png)
.
(2)若
,且对
,有
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638ae79a409a179f61215e33dbbe8226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
①求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
②证明:对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5141a5b907f5ff11bbd7cacbd7b5db3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef065f95b2ebebad9dfccdff104e297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f01da8ee2ecca6479cee035f30a6734.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2f2d7c81cb44416bcdf59419637682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5141a5b907f5ff11bbd7cacbd7b5db3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d784b3a582342a9a36b14546fa560552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2fc5f90d2a9b695e8fff79db50d927.png)
您最近一年使用:0次
2020-05-25更新
|
1122次组卷
|
4卷引用:2020届江苏省百校高三下学期5月第五次联考数学试题
2020届江苏省百校高三下学期5月第五次联考数学试题重庆市西南大学附属中学2019-2020学年高一下学期期末数学试题(已下线)预测07 数列-【临门一脚】2020年高考数学三轮冲刺过关(江苏专用)(已下线)专题07 一元二次函数、方程和不等式中的压轴题(一)-【尖子生专用】2021-2022学年高一数学考点培优训练(人教A版2019必修第一册)
解题方法
3 . 若无穷数列
满足:存在
,对任意的
,都有
(
为常数),则称
具有性质![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb206a74ff344264a946a64e4e8c3d06.png)
(1)若无穷数列
具有性质
,且
,求
的值
(2)若无穷数列
是等差数列,无穷数列
是公比为正数的等比数列,
,
,
,判断
是否具有性质
,并说明理由.
(3)设无穷数列
既具有性质
,又具有性质
,其中
互质,求证:数列
具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018ec9032bdd3bb95b3b6c5f11e3613b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/918f40dc666f08ee2c9283ee14c35ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb206a74ff344264a946a64e4e8c3d06.png)
(1)若无穷数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f13d38fa8dc61cc15b24ca37d9ef7cc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f79ae17a7a504d6b0998364c13a9e0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c9ebcaf713a9d2bb692db76ccf3150.png)
(2)若无穷数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e52d55280e664b707f4e9ef4cb1554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928be44c53a39c116c715ab72f2f2d95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb2db37e079b735acc41ea3035139e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbc163ef99f5698327d92c2096bd2ae.png)
(3)设无穷数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0472160725de0784ca17b9e27b2056f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39ecf7a0c6499fec40f91c1d0746246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538942b126a3f39d8fb22d9cff86f2cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7971656803a83d57a35ee3fc8e1a2cde.png)
您最近一年使用:0次
名校
解题方法
4 . 已知数列{an}满足
,若2≤a10≤3,则a1的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f42d684f722577b7772e0aee32d9fe.png)
A.1≤a1≤10 | B.1≤a1≤17 | C.2≤a1≤3 | D.2≤a1≤6 |
您最近一年使用:0次
2020-09-10更新
|
1019次组卷
|
11卷引用:浙江省2019年6月普通高中学业水平考试数学试题1
浙江省2019年6月普通高中学业水平考试数学试题1(已下线)浙江省2019年6月普通高中学业水平考试数学试题(已下线)第二章+数列(能力提升)-2020-2021学年高二数学单元测试定心卷(人教版必修5)(已下线)黄金卷03-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(江苏专用)(已下线)2021年高考数学押题预测卷(江苏专用)01陕西省咸阳市2021届高三五月数学信息专递试题(已下线)考点突破14 数列-备战2022年高考数学一轮复习培优提升精炼(新高考地区专用)新疆新源县2020-2021学年高一下学期期末联考数学试题(已下线)第4章《数列》 培优测试卷(二)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)陕西省延安市第一中学2022-2023学年高二上学期第一次月考文科数学试题安徽省合肥市第一中学2023-2024学年高二上学期素质拓展训练(10)数学试题
5 . 已知数列
满足:对任意
,
,且
,
,其中
,则使得
成立的最小正整数
为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0483a2816b0472a5b4a09f1a716ae01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86288a7076fa0a46eaef6e54698b031e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01d7f7114b0e11e721da2aecb48ec3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c111ae39998037ad9c2eef5a892b3e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f2a59516059405a6fd9d83a3a679dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2020-05-01更新
|
658次组卷
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3卷引用:重庆市江津中学、綦江中学等六校2019-2020学年高三下学期4月复学联合诊断性考试数学(理)试题
重庆市江津中学、綦江中学等六校2019-2020学年高三下学期4月复学联合诊断性考试数学(理)试题重庆市七校2019-2020学年高三下学期联考数学(理)试题(已下线)专题11 数列的综合应用-2022年高考数学一轮复习小题多维练(新高考版)
6 . 设
是等差数列,
是等比数列,公比大于0.已知
,
,
,
.
(Ⅰ)求数列
,
的通项公式;
(Ⅱ)设
,
.
(ⅰ)求
;
(ⅱ)证明
.
![](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/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a55c6c2303f63c7ca868120cddf11643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ffd408b39c5eb8de41c7a41553b31f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/355f362a3cdd8067cf5a70307f1af2d9.png)
(Ⅰ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ade7e0ddb63e3b97a5b014b673d4870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f82050005cc15445315046f3ec035e.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(ⅱ)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d9dc4b4bf9d5a306112ad8488387b6.png)
您最近一年使用:0次
2020-08-18更新
|
861次组卷
|
5卷引用:【校级联考】天津市七校(静海一中、宝坻一中、杨村一中等)2019届高三上学期期末考试数学(理)试题
【校级联考】天津市七校(静海一中、宝坻一中、杨村一中等)2019届高三上学期期末考试数学(理)试题(已下线)专题19 数列(解答题)-2020年高考数学母题题源解密(天津专版)天津市实验中学2019-2020学年高三上学期第三次阶段考试数学试题(已下线)专题6-2 数列求和15种类型归纳-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)河北省唐山市开滦第二中学2021届高三上学期期末数学(理)试题
7 . 设
是数列
的前
项和,且
是
和2的等差中项.
(1)求数列
的通项公式;
(2)记
.
①求数列
的前
项和
;
②设
,求证:
.
![](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/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680b2b77627feae49358206f0fed1134.png)
①求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc01cb2744683d07c17eaa8155f408ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff4a26114132707077462a200be8557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce61806b45006520f999a1255c440ff6.png)
您最近一年使用:0次
2020-04-14更新
|
528次组卷
|
4卷引用:浙江省十校联盟2019-2020学年高三下学期寒假返校考试数学试题
浙江省十校联盟2019-2020学年高三下学期寒假返校考试数学试题(已下线)专题15 数列与不等式(解答题)-冲刺2020高考跳出题海之高三数学模拟试题精中选萃(浙江专版)1号卷·A10联盟2022届全国高考第一轮总复习试卷数学(理科)试题(十)天津市武清区杨村第一中学2023-2024学年高三下学期第二次热身练数学试题
8 . 两光滑的曲线相切,那么它们在公共点处的切线方向相同.如图所示,一列圆
(an>0,rn>0,n=1,2…)逐个外切,且均与曲线y=x2相切,若r1=1,则a1=___ ,rn=______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef31efd637155debcc44ff09ca0b6b08.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/5f177df0-ede8-40de-8e32-00e57e4793c6.png?resizew=193)
您最近一年使用:0次
2020-04-13更新
|
1121次组卷
|
2卷引用:2020届江西省南昌市第一次模拟测试理科数学试题
9 . 已知数列
,若对任意的
,
,
,存在正数
使得
,则称数列
具有守恒性质,其中最小的
称为数列
的守恒数,记为
.
(1)若数列
是等差数列且公差为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
,前
项和记为
.
①证明:数列
具有守恒性质,并求出其守恒数.
②数列
是否具有守恒性质?并说明理由.
(2)若首项为1且公比不为1的正项等比数列
具有守恒性质,且
,求公比
值的集合.
![](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/338947df86eb08f890be799504afe309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa7087972cc3cbf6f5276059a527e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd365163286123cd43939a989211ccd.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/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f282b34cb12ceb853401ede8b9ff7408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
①证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
②数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce224c28ca451c4f105dc3b077736cb.png)
(2)若首项为1且公比不为1的正项等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f970f380a12c843bb4a74ff34a15b2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
您最近一年使用:0次
2020-03-12更新
|
466次组卷
|
2卷引用:2020届江苏省百校联考高三上学期第三次考试数学试题
10 . 设公差不为0的等差数列
的前
项和为
,等比数列
的前
项和为
,若
是
与
的等比中项,
,
.
(1)求
,
与
;
(2)若
,求证:
.
![](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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf86d176e66c7defe5a2543108e0769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef4c607c86b5118a737d0998f521c86.png)
(1)求
![](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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(2)若
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2020-02-18更新
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5卷引用:2020届浙江省杭州市上学期高三年级期末教学质量检测(一模)数学试题
2020届浙江省杭州市上学期高三年级期末教学质量检测(一模)数学试题(已下线)【新东方】新东方高三数学试卷3102020届河北省衡水中学高三高考考前密卷(一)数学(理)试题(已下线)专题20 数列综合-2020年高考数学母题题源全揭秘(浙江专版)(已下线)第23讲 证明数列不等式-2022年新高考数学二轮专题突破精练