名校
1 . 已知数列
满足
,
,则
等于__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bae03ee4ac75dacfb026290e4207dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5684f9739adff7950f8287d3e280e2ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8189b32ebd99546ac9ac5747478b30a3.png)
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2021-12-06更新
|
440次组卷
|
3卷引用:1.1数列检测题 B卷(综合提升)
20-21高二·全国·课后作业
解题方法
2 . 数列
中,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e40ed9ff04566921c6a1291eed08fd9.png)
,则数列
的最大项为________ .
![](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/3e40ed9ff04566921c6a1291eed08fd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9edfcbdd2c993b3a47aa60ef84c123c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
解题方法
3 . 将数列
中的所有项按每一行比上一行多1项的规则排成如下数阵:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
,
,
,
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
……
记数阵中的第1列数
,
,
,…构成的数列为
,
为数列
的前n项和,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e417f60dcc8791d8f3b13f2e7bdeb7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da4cd81500bdb43118150dbdb1541e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd71bc7e6668f90f259ad0b06dd60c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
……
记数阵中的第1列数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc93bdea0b85a84179354b598b6f74e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e417f60dcc8791d8f3b13f2e7bdeb7.png)
您最近一年使用:0次
名校
4 . 在数列
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac326f9f4ad78d0053c113f823ea6d60.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c6b9f1244976f370d5b284f0b10680c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac326f9f4ad78d0053c113f823ea6d60.png)
您最近一年使用:0次
2021-11-05更新
|
749次组卷
|
2卷引用:北师大版(2019) 选修第二册 突围者 第一章 第一节 数列 课时1 数列的概念
5 . 意大利数学家斐波那契以兔子繁殖为例引入“兔子数列”,即1,1,2,3,5,8,13,21,34,55,89,144,233,…,也称为斐波那契数列.在实际生活中,很多花朵(如梅花、飞燕草等)的花瓣数恰是斐波那契数列中的数,斐波那契数列在物理、化学等领域也有着广泛的应用.在斐波那契数列
中,
,
,
.已知
为该数列的前
项和,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6043eddaa448e6e444bb20ef68590582.png)
______ .
![](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/f966272f7781790ff27e40db6b525253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3e48f4ac76f26612d0a6c3a55dbc32b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b42ac5a4b7b434187288a8a19aab8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6043eddaa448e6e444bb20ef68590582.png)
您最近一年使用:0次
名校
6 . 若数列
满足,
,
,则数列
前
项的积等于________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23093a3f4c23494a943e3957596fee92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d01dd350dc95f42f1883e0cc7aae084.png)
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名校
7 . 斐波那契数列(Fibonaccisequence),又称黄金分割数列,因数学家列昂纳多斐波那契(LeonardodaFibonacci)以兔子繁殖为例子而引入,故又称为“兔子数列”.它是这样一个数列:1,1,2,3,5,8,13,21,34,55……在数学上,斐波那契数列以如下递推的方法定义:a1=1,a2=1,
(n≥3,n∈N*),记其前n项和为Sn,设a2019=t(t为常数),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2299eb0368df6ed8aa009cc126172127.png)
________ (用t表示),![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78786992daefb8e46c56095fdafc90a8.png)
________ (用常数表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad8bc9fc11e04b6a44656f5aad35af4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2299eb0368df6ed8aa009cc126172127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78786992daefb8e46c56095fdafc90a8.png)
您最近一年使用:0次
2020-10-24更新
|
410次组卷
|
3卷引用:4.1 数列的概念(精练)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第二册(人教A版)
(已下线)4.1 数列的概念(精练)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第二册(人教A版)广东省东莞市2019-2020学年高二上学期期末数学试题陕西省西安中学2019-2020学年高二上学期期末教学质量检查数学试题
8 . 数列
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c6ce06c1cd6542d0bb2bedaf66b8cf.png)
______ .
![](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/79de73e83aafacbfe4aa0ede5a7ec6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c6ce06c1cd6542d0bb2bedaf66b8cf.png)
您最近一年使用:0次
2020-09-04更新
|
298次组卷
|
2卷引用:人教B版(2019) 选修第三册 突围者 第五章 第一节 课时2 数列中的递推
9 . 数列
中,已知
,
,若
,则数列
的前6项和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316b5d6779890069e877f081d1833883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f8f84f3284691766c63ba8e04486cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2020-09-04更新
|
622次组卷
|
4卷引用:专题4.1 数列的概念(B卷提升篇)-2020-2021学年高二数学选择性必修第二册同步单元AB卷(新教材人教A版,浙江专用)
(已下线)专题4.1 数列的概念(B卷提升篇)-2020-2021学年高二数学选择性必修第二册同步单元AB卷(新教材人教A版,浙江专用)(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)云南省昆明市2019-2020学年高二下学期期末质量检测数学(理)试题(已下线)专题7.1 数列的概念与简单表示(精练)-2021年新高考数学一轮复习学与练
2020高三·全国·专题练习
10 . 已知数列
中,
,
,且
,则
的值为____
![](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/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5911f3934a593d96e10a2269031a1837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaec3004937aab88c44e66753caab782.png)
您最近一年使用:0次