等差数列
中,若
,
,则数列
的公差为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7abe2dbf91b745e81aa97bee35b0bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb00f94610071540256bd796742a3295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
A.1 | B.-1 | C.5 | D.-5 |
更新时间:2020-09-13 08:37:08
|
【知识点】 等差数列通项公式的基本量计算
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【推荐2】在等差数列
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A.9 | B.11 | C.13 | D.15 |
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