已知等差数列
的通项公式为
,则公差为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204599d8ea20f6c9067108e219408e77.png)
A.5 | B.4 | C.2 | D.3 |
更新时间:2024-05-09 23:30:29
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【知识点】 利用等差数列的性质计算
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