名校
1 . 如图,用若干根相同的小木棒拼成图形,拼第
个图形需要
根小木棒,拼第
个图形需要
根小木棒,拼第
个图形需要
根小木棒
若按照这样的方法拼成的第
个图形需要
根小木棒,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7f959148f8da15d2a4a4ceb30745df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f573bd1591735843cc5852535af976f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb80913fc086c6a264ed476d193e7344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/18/47547680-fc45-4adc-b7d1-f410ad68c809.png?resizew=372)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-10-02更新
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46次组卷
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2卷引用:湖南省岳阳市第十三中学2023-2024学年高一上学期入学考试数学试题
2 . 记
(
)表示从
起连续
个正整数的和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6791ebc81c5fc5e06e06284d034b5cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04c7ba0ffd54e60b2829f4440c91ec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884ce1e9436d39f34f6d3116cb2a140.png)
(1)则
(2)将写成
的形式是
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