已知等差数列
的公差
不为0,等比数列
的公比
,若
,且
是正整数,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282c5299d3a7d7d8444a67610f51f6cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b938d4b8abbd701835f75db0f6c3891a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13b6183d0a5fc6ab48a3167677cf99b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
A.4 | B.2 | C.![]() | D.![]() |
21-22高二下·河南·阶段练习 查看更多[2]
更新时间:2022-04-08 14:15:13
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】公差不为0的等差数列
的前n项和为
,若
,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/003cbf90fafcd65bce3e14e9814c9469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170e3ac4fb4dc4a9b74dded22ff634d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.15 | B.25 | C.13 | D.23 |
您最近一年使用:0次
【推荐2】已知等差数列
的前
项和是
,则 “
是等差数列”是 “
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.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/1a3f1b74617dd38886e52ea07ab0032d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52e18f280e65998d2ee45f6a7a43b18.png)
A.充要条件 | B.必要不充分条件 |
C.既不充分也不必要条件 | D.充分不必要条件 |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐1】在递增等比数列
中,
,
,且前
项和
,则项数
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92fab43382de908f2719106f54a2fcf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8a88edbcda50fd1f884cd5665a2b994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011f9ba8e9506e176863ba302989ea58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.4 | B.5 | C.6 | D.7 |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐2】在正项等比数列
中,
,
,
的前
项积为
,则满足
的最小正整数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9672dc9adb691f441a1b87a0bc28d854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462625b5f5d0a18bcd996ab5adbb136e.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45906519d247ad1af06065ba01bfe96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次