记不超过x的最大整数为
,如
,
.已知数列
的通项公式
,则使
的正整数n的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032635d4e60381fb37c8f4e8f12805f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d24a3172fed9e90c4297d6a859ee00c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4935472b623606f6cccbccec64de5b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af41f69faa99e847ee18d2de283542aa.png)
A.5 | B.6 | C.15 | D.16 |
更新时间:2022-01-22 20:16:45
|
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单选题
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适中
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【推荐1】对于给定的正整数数列
,满足
,其中
是
的末位数字,下列关于数列
的说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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A.如果![]() ![]() ![]() |
B.如果![]() ![]() ![]() |
C.如果![]() ![]() ![]() |
D.如果![]() ![]() ![]() |
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解题方法
【推荐2】在数列
中,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9031803b606100fd1b7bdd4d851af8c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587c2a1a7b8a2da58c1db699add37afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
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解题方法
【推荐1】对于正项数列
,定义
为数列
的“匀称值”.已知数列
的“匀称值”为
,则该数列中的
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd12fceb32d9f3f036f52c62fcf0b7a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1203141d0740e99c56c88ac583e05b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
【推荐2】若一个数列的第
项等于这个数列的前
项的乘积,则称该数列为“
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是一个“
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
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A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() |
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