图1是第七届国际数学教育大会的会徽图案,会徽的主体图案是由如图2所示的一连串直角三角形演化而成的,其中
.如果把图2中的直角三角形继续作下去,记
的长度构成的数列为
,则
=( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/bc07e952-a6d2-464a-9f73-780cb1248f03.png?resizew=376)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab35dd3ce3ba866e993fe3824785f6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f63117ea88783dd185316e741c7a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066bed69d03aee63a37e1259f6599e55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/bc07e952-a6d2-464a-9f73-780cb1248f03.png?resizew=376)
A.20 | B.10 | C.![]() | D.![]() |
更新时间:2023-01-25 20:27:10
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相似题推荐
【推荐1】已知数列
满足
,若
表示不超过
的最大整数,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c59774adf0e6f5b63124c89fd0eaf90.png)
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A.![]() | B.0 | C.1 | D.2 |
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【推荐2】意大利著名数学家斐波那契在研究兔子繁殖问题时,发现有这样一列数:
.该数列的特点为前两个数都是1,从第三个数起,每一个数都等于它的前面两个数的和,即
,人们把这样的一列数组成的数列
称为“斐波那契数列”,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a238c89ab1b54d5fde6b18770629b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5e89456955d7070ab95f5b760ad9a2.png)
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【推荐1】我们把满足
的数列
叫做牛顿数列,已知函数
,且数列
为牛顿数列,设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed071987e22f4e1fcdbaaa426dad1b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ef572e2f82ac259935f6ed12632184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8315d4bcd8b214e04461ae80354fb28f.png)
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【推荐2】已知数列
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,
,则
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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