对于等差数列{
},有如下一个真命题:“若{
}是等差数列,且
=0,s、
是互不相
等的正整数,则
”.类比此命题,对于等比数列{
},有如下一个真命题:若{
}是等比数列,且
=1,s、
是互不相等的正整数,则__________ .
![](https://img.xkw.com/dksih/QBM/2010/12/17/1569938379333632/1569938384551936/STEM/29eef68c03f84f298cdaec7b384ff038.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2010/12/17/1569938379333632/1569938384551936/STEM/29eef68c03f84f298cdaec7b384ff038.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2010/12/17/1569938379333632/1569938384551936/STEM/1dea941120994d789abaaf331316ac48.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2010/12/17/1569938379333632/1569938384551936/STEM/635e967de0804ff4aeb25b13a5a7799f.png?resizew=9)
![](https://img.xkw.com/dksih/QBM/2010/12/17/1569938379333632/1569938384551936/STEM/91d350174caf42eaa9ae6c83db78f9f2.png?resizew=12)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9441508f6ef18c5a3b0d190da40a349a.png)
![](https://img.xkw.com/dksih/QBM/2010/12/17/1569938379333632/1569938384551936/STEM/1e5de7a2335045fa966c6887ab04f2fc.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2010/12/17/1569938379333632/1569938384551936/STEM/1e5de7a2335045fa966c6887ab04f2fc.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2010/12/17/1569938379333632/1569938384551936/STEM/64da15ff16664a43a5ba6ab6301bd40d.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2010/12/17/1569938379333632/1569938384551936/STEM/635e967de0804ff4aeb25b13a5a7799f.png?resizew=9)
9-10高三·湖南湘潭·阶段练习 查看更多[2]
更新时间:2019-01-30 18:14:09
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【知识点】 等差、等比数列中的类比推理解读
相似题推荐
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【推荐1】已知等差数列的定义为:在一个数列中,从第二项起,如果每一项与它的前一项的差都为同一个常数,那么这个数叫做等差数列,这个常数叫做该数列的公差.类比等差数列的定义给出“等和数列”的定义:_____________________________________ ;已知数列
是等和数列,且
,公和为
,那么
的值为____________ .这个数列的前
项和
的计算公式为_____________________________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53c211eecfe7c449b52ace8aef55d58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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|
适中
(0.65)
【推荐2】设等差数列{an}的前n项和为 Sn,则 S4,S8-S4,S12-S8,S16-S12成等差数列.类比以上结论我们可以得到一个真命题为:设等比数列{bn}的前n项积为Tn,则______________ 成等比数列.
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