名校
1 . 已知数列
,若存在一个正整数
使得对任意
,都有
,则称
为数列
的周期.若四个数列分别满足:
①
,
;
②
,
;
③
,
,
;
④
,
.
则上述数列中,8为其周期的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2b94cbf8f1acc77ed2618d9ba5756a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65dc24efb25d45066dd25aad9958996.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cf7b08386d0bc9b6393d4a4e46e77be.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e1ee88beaddafb0d0a185c3a8e0dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf707341083a8aa04dbf8d22a02654e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e236fc9ae30a082b4e7ef16b520cbffa.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea6578afabc23f5d7041b88c3790dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646ceaeea64ac847d43782db3f02f1ab.png)
则上述数列中,8为其周期的个数是( )
A.1 | B.2 | C.3 | D.4 |
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4卷引用:北京市朝阳区2022届高三一模数学试题
2 .
为不超过x的最大整数,设
为函数
,
的值域中所有元素的个数.若数列
的前n项和为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36304502dd9ae85a33ed38d59c655ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d75b41d921dc7ac0ed02b4078100a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd528794eeb02c09998021d05f116c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4b5a382f920203b9ef307224ae641e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5卷引用:北京市育英学校2023届高三上学期数学统测(一) 试题
名校
3 . 斐波拉契数列
满足:
,
,
.该数列与如图所示的美丽曲线有深刻联系,设
,
,给出以下三个命题:( )
;
②
;
③
.
其中真命题的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f966272f7781790ff27e40db6b525253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61f1fe8852e60905383a1420e3164a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2efba990f1fca3fe00fb5e0a7fff0bf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35603dded2e0b3aa9b63fa08df2fe41a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2a76334839de6644715c3b1dcf88d7.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44571b15179ffaa2eb54babb17deee61.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d2bfcfbc0cecc71382c5599da6acf0.png)
其中真命题的个数为( )
A.0 | B.1 | C.2 | D.3 |
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5卷引用:北京市中国人民大学附属中学2022届高三2月自主复习检测练习(开学测)数学试题
北京市中国人民大学附属中学2022届高三2月自主复习检测练习(开学测)数学试题(已下线)临考押题卷02-2022年高考数学临考押题卷(北京卷)北京师范大学附属中学2023届高三上学期数学大单元测试题湖北省荆州市沙市中学2022-2023学年高二下学期2月月考数学试题(已下线)盲点4 斐波那契数列
名校
4 . 数列
的前
项和为
,
,且对任意的
都有
,则下列三个命题中,所有真命题的序号是( )
①存在实数
,使得
为等差数列;
②存在实数
,使得
为等比数列;
③若存在
使得
,则实数
唯一.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999ac8c1ef39251e07a7fc54cbf7e26e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194463e3b011603ff59c0789bcb65c40.png)
①存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
②存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
③若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694b52596fdfcc391b23b3894ad85ec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17bdc46d9f8256161c18158c1f5dc386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.① | B.①② | C.①③ | D.①②③ |
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|
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5卷引用:数学-2022年高考押题预测卷02(北京卷)
(已下线)数学-2022年高考押题预测卷02(北京卷)(已下线)课时22 数列、等差数列、等比数列-2022年高考数学一轮复习小题多维练(上海专用)(已下线)课时25 数列新定义-2022年高考数学一轮复习小题多维练(上海专用)河南省周口市太康县第一高级中学2022-2023学年高二上学期第一次月考数学(文科)试题 上海市浦东新区2021届高三二模数学试题
名校
5 . 数列
满足:对所有
且
,
,使得
,则称数
是“
数列”.现有以下四个数列:①
;②
;③
;④
;其中是“
数列”的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e288f98ad9c229128c2c40815b56f692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d601a52ff5bcfd1be8e4f1e8684f99e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f367d90f02b00f728b0d64c03a9397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a97e99f49ad1998d2858e1963aa45de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d16635512e625ab5e3b5f175e90c86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5562217f11fa716c1ae4fd1b33f8799d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
A.①④ | B.①③④ | C.②③ | D.①② |
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|
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2卷引用:北京市北师大附属实验中学2021-2022高二下学期数学月考试题
6 . 对于项数为
的有穷数列
,记
,则称数列
为数列
的控制数列,如数列
的控制数列为1,3,3,5,5. 若各项都是正整数的数列
的控制数列为2,2,3,3,5.则集合
中所有元素的和等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbad6a327db8733d9622e75dff2052cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522bc03934ea5b3acadc4c02398c2d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c4e926a90b6b3b0e4cf05f10036ef01.png)
A.7.5 | B.8 | C.![]() | D.9 |
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2卷引用:北京市育英学校2021-2022学年高二4月期中考试数学试题