1 . 设数列
的首项
,且满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511a678c4f733fc6562f963e2b70fc71.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738dc67ac3b150252a964d1ffe3dfa63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b15bf488d55b4126fed6469b5da74b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511a678c4f733fc6562f963e2b70fc71.png)
您最近一年使用:0次
2022-11-09更新
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778次组卷
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2卷引用:2001年普通高等学校招生考试数学(文)试题(上海卷)
真题
名校
2 . 在等差数列![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c2379e3cfcab6fb93bf7bb584cb605.png)
_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c2379e3cfcab6fb93bf7bb584cb605.png)
您最近一年使用:0次
2017-05-18更新
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724次组卷
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5卷引用:2003 年普通高等学校招生考试数学(文)试题(上海卷)