名校
解题方法
1 . 将
个数排成
行
列的一个数阵,如图:
![](https://img.xkw.com/dksih/QBM/2021/5/17/2723154565627904/2728929653186560/STEM/6c88f1013ec443198f92cf5acd8bf705.png?resizew=200)
该数阵第一列的
个数从上到下构成以
为公差的等差数列,每一行的
个数从左到右构成以
为公比的等比数列(其中
).已知
,
,记这
个数的和为
.给出下列结论:
①
;
②
;
③
;
④
.
其中结论正确的是______ .(填写所有正确答案的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/2021/5/17/2723154565627904/2728929653186560/STEM/6c88f1013ec443198f92cf5acd8bf705.png?resizew=200)
该数阵第一列的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c20bc8da04fbb4bfea4e412274dde2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b73ec6f2aef5440b1b689fe74a8da96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd9f9fa5a74a471d784caf42fa662a6b.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0367f5f840bf6ad1c1dc94049a326e26.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ee24cb4787a625ef896018298b3a22.png)
其中结论正确的是
您最近一年使用:0次
2021-05-25更新
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