1 . 已知数列
满足
,
.
(1)证明:存在等差数列
,当
时,
成立;
(2)求
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25673902449184f5727cbc786aa82a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d676517bbb3c12d5028540db285ce0.png)
(1)证明:存在等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e468312d09c6563c9094b710a35a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3f2f6ea01a3012710b80744c790cd3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25673902449184f5727cbc786aa82a0.png)
您最近一年使用:0次
2 . 已知
,
,记
,其中
表示
这
个数中最大的数.
(1)求
的值;
(2)证明
是等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80c1ed7b10ac7ca1cd81cdd39a8fcc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ff259bff098430a6512d0e4f6fb2d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7c25bbcda4893fd243d929c01f969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d9812dcbb57996f2212b037918ab195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b125c9321c0d8bd9cf942d6da8bebf16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b14e03f30c56d9943e4a82d0e029b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/312893147a40a4cd5d46fc2ad309c488.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
您最近一年使用:0次
2020-01-10更新
|
296次组卷
|
4卷引用:福建省三明市2021届高三围题卷数学试题