名校
解题方法
1 . 已知数列
的前
项和
,则数列
的通项公式为__________ .
![](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/f9b8c236da8cf6588d3f31e2461543b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2024-01-13更新
|
1126次组卷
|
5卷引用:高二数学开学摸底考 (北京专用,范围:人教A版2019选一+选二全部)-2023-2024学年高二数学下学期开学摸底考试卷
(已下线)高二数学开学摸底考 (北京专用,范围:人教A版2019选一+选二全部)-2023-2024学年高二数学下学期开学摸底考试卷吉林省长春博硕学校2023-2024学年高二上学期期末考试数学试卷(已下线)5.1.2 数列的递推(2知识点+6题型+强化训练)-【帮课堂】2023-2024学年高二数学同步学与练(人教B版2019选择性必修第三册)四川省成都市第七中学2023-2024学年高二下学期3月阶段性检测数学试题云南省昆明市禄劝彝族苗族自治县第一中学2023-2024学年高二下学期3月阶段性检测数学试题
解题方法
2 . 已知:正整数列
各项均不相同,
,数列
的通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f44d3c3cbd26b797a70e5fd060f3106.png)
(1)若
,写出一个满足题意的正整数列
的前5项:
(2)若
,求数列
的通项公式;
(3)证明若
,都有
,是否存在不同的正整数
,j,使得
,
为大于1的整数,其中
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de777c4e44546bcfe26ad5b6bb418052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f44d3c3cbd26b797a70e5fd060f3106.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a7269903c6005c0645a6033c8c1dd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d11adcab5f73046ada2b4dd21ba74614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)证明若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d2e7f3d5771184a5a93749368dc2a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f33e3c5a9ab39e55e78d6aef60e5e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b97c28585cf80e2b403c8e23ac391573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2690c409f513b571c3c2548228536d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b204cd055cc01b4fc9dd888b8348d12.png)
您最近一年使用:0次
3 . 已知数列
的前
项和为
,
,______.指出
、
、…
中哪一项最大,并说明理由.
从①
,
,②
是
和
的等比中项这两个条件中任选一个,补充在上面问题中并作答.
![](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/64581c476f6c32ab582e7942edc2ca70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
从①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb23a0aa533fe2f67a50551bb7772ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95a1c9b86f4d0024c80b41a8cfea8b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da4cd81500bdb43118150dbdb1541e6.png)
您最近一年使用:0次
2020-05-01更新
|
774次组卷
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