23-24高二上·江苏·课前预习
解题方法
1 . 已知
为等比数列.
(1)若
,求
;
(2)若
,
,求
;
(3)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30150307a0e0a89f7772a3f44de8d65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba80bbcfba311b30e935d533cd4acdf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ebfbabb71da046c917528410b2e403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb1bd430a80a323df20b5c2fe46ce0b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988612f5c1ec8a4ddadac21f9e4d3805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e638a91ce94abce758416241f67fbb5.png)
您最近一年使用:0次
23-24高二上·江苏·课前预习
2 . 在等差数列
中,公差
,且
成等比数列,则
等于多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2df98ce180b9d9e1a83f2c1332e2da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeb46b0c02ecc62ad82f8695b3064cd.png)
您最近一年使用:0次
3 . 等比数列
中,
,
,则
与
的等比中项是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ee45219629dd30af171588e646f8b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d9b6c86435e0ceff94d8ad1cd03737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
A.![]() | B.4 | C.![]() | D.![]() |
您最近一年使用:0次
2020-11-04更新
|
393次组卷
|
3卷引用:第4课时 课前 等比数列的概念与通项公式
4 . 已知
是1,2的等差中项,
是
,
的等比中项,则
等于( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec54f53122364c46e1e43d1a84f210fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
A.6 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-04-05更新
|
1141次组卷
|
5卷引用:第四章 数列(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(苏教版2019选择性必修第一册)
(已下线)第四章 数列(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(苏教版2019选择性必修第一册)(已下线)等比数列的概念山东省聊城市文苑中学2019-2020学年高二上学期第四次考试数学试题人教A版(2019) 选择性必修第二册 过关斩将 第四章 数列 4.3 等比数列 4.3.1 等比数列的概念(已下线)第七课时 课中 4.3.1.1等比数列的概念与通项公式