设数列
满足
.
(1)求
的通项公式;
(2)求数列
的前n项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d8ec8dda53fb220b352d9aab1cf1e7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c1758fdd909087febed71aa7e7bdbcf.png)
更新时间:2024-06-04 13:54:05
|
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【推荐1】已知等比数列
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(Ⅰ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅱ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d8d6953606f7c281bf587197ed6c3d.png)
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解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐2】已知数列
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.
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(1)证明:数列
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(2)已知数列
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa39a31e297732252dc146fd5b4b999d.png)
您最近一年使用:0次
【推荐1】在①
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这三个条件中任选一个补充在下面问题中,并解答下列题目.
设首项为2的数列
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设首项为2的数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639685bf57fcf144019619d22ef72238.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐2】已知数列
的前
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(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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(1)求
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次