已知数列
满足
.
(1)求
;
(2)若
,且数列
的前n项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b3a848480094fcf7de857e26e97c252.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f2408f745de1c6fc042f4a93212edf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375bbf1bd362d1318680ae5d144922dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63b998f4909841e47575281936b3f55.png)
更新时间:2022-02-10 14:26:45
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