1 . 已知首项为
的无穷数列
满足
,并且
(
),
为数列
的前
项和,对于给定的正整数
,给出下面四个结论:
①当
为奇数时,
有
种可能的取值;
②当
为偶数时,
可能是等差数列;
③当
为奇数时,
的最大值是
;
④当
为偶数时,
的最大值是
.
其中所有正确结论的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894aaec56149f880c7cf2bbc0f358d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf36f790f382b0ee6a578e9388bb9d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0227465f48258b9b32f68ac0ec3105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6600e42d47309d55877a0c23add5dfbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](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/f0a532e15e232cb4b99a8d4d07c89575.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb478a4519aec71aedec96721956f2ad.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22209af9bc2fcb212d11b6e1b8ea416.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0a9523f2084cf17b8656c11ab1d95e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4645b6368eae25e9ecede56e45a8459.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0a9523f2084cf17b8656c11ab1d95e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36584726b87a9d661b3aaf18ab200baa.png)
其中所有正确结论的序号是
您最近一年使用:0次
名校
2 . 已知数列
满足
,
,则
的整数部分是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c286f0bf939f0ec7abed0d75f414c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a564595e470d31c824b99575a53f9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f08bfc248240b1059552d603a4181c7.png)
您最近一年使用:0次
2020-07-17更新
|
659次组卷
|
3卷引用:广西柳州高级中学、南宁市第二中学2023届高三上学期9月联考数学(理)试题