1 . 在数列
中,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8467337eed9bb6d94c6c22c6d031839d.png)
(1)求证:数列
为等差数列;
(2)若数列
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8467337eed9bb6d94c6c22c6d031839d.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0576765ab587a93bf03e8d8a3cdf6cfb.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42dd12e4dc081149aabab9a7bc2e0e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d889ab052426a02bc71aeaae626e41.png)
您最近一年使用:0次
2018-07-17更新
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2364次组卷
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3卷引用:【全国市级联考】内蒙古包头市2017-2018年高一第二学期期末大联考数学试题