解题方法
1 . 已知
和
均为等差数列,
,
,
,记
,
,…,
(n=1,2,3,…),其中
,
,
,
表示
,
,
,
这
个数中最大的数.
(1)计算
,
,
,猜想数列
的通项公式并证明;
(2)设数列
的前n项和为
,若
对任意
恒成立,求偶数m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebaf2a2590bb84d646957f913d78f6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8f08a2e3a40cc2fb680104133df13a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4602c763b6896b76ec80c73cbb6b0126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075255ba5f02900e250ff61f7491dc5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f40db3e0b43d3e92b807827c1612f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d294754430977273da149a8ea6c345da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a202bda83f2640744337ee18ad45dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a47d46ba3cddd9ba7e79b8d0369592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637f94c79ddadc15f305bed8adc45733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
(1)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7936359df4c926b72b48c6fdae55f12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76f79be89b8c6227b68eded6b675546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db84454f051d418a4904fa423ab8b304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0909e967ae83425ea3b319bc25b3ad34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd32114b6a51df290934bce11b6e255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
您最近一年使用:0次
2022-04-08更新
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876次组卷
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3卷引用:山东省潍坊市2022届高三下学期高中学科核心素养测评数学试题