已知数列
满足
,
(
,
),
是数列
的前
项和,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04cf941066ef0cb1889d357de734d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78d551e6cc415f570dc7fc49b825cb1.png)
A.508 | B.506 | C.1011 | D.1009 |
2022·河北·模拟预测 查看更多[3]
河北省五校联盟(保定市第一中学等)2022届高三下学期3月模拟数学试题(已下线)2022年高考考前20天终极冲刺攻略(三)【数学】(新高考地区专用)(5月31日)(已下线)重难点07五种数列求和方法-2
更新时间:2022-03-14 10:35:58
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单选题
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适中
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名校
解题方法
【推荐1】已知斐波那契数列
满足:
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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A.2022 | B.2023 | C.59 | D.60 |
您最近一年使用:0次
【推荐2】设
为数列
的前n项和,若
,且存在
,
,则
的取值集合为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/676ca386d9d533a835caf366ad261ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7399fcd570d1de4057f2059759d18cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720709e488b6c465fa93fd29e9985f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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适中
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解题方法
【推荐1】已知数列
满足
,
,且
,则数列
的前59项和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a80eeaa440eab8ba1f4fbdcdecf5d11.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
解题方法
【推荐2】若有穷数列a1,a2,…,an(n是正整数),满足a1=an,a2=an-1,…,an=a1,即ai=an-i+1(i是正整数,且1≤i≤n),就称该数列为“对称数列”.已知数列{bn}是项数不超过2m(m>1,m∈N*)的对称数列,且1,2,4,…,
是数列{bn}的前m项,则当m>1200时,数列{bn}的前2019项和S2019的值不可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdbb3e21eb063c31749d92215f50c6e.png)
A.![]() | B.22019-1 |
C.![]() | D.![]() |
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