解题方法
1 . 已知等差数列
中,
,
,设
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366dfedff1a1a96ec27650375b680059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0abedd59476f8793d5a8948590a70c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa5ad5271cca1679e7ca7075c5d30cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a1c522dd7143105fdf6c32d97a540e.png)
A.245 | B.263 | C.281 | D.290 |
您最近一年使用:0次
2024-04-04更新
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996次组卷
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2卷引用:内蒙古自治区包头市2024届高三一模数学(理)试题