名校
1 . 已知
四个实数成等差数列,-4,
,
,
,-1五个实数成等比数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1900e5d990ba55850042d3857c4a1ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13423c094861baf4b759b7f3d8c3c226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57483e04fd1840c87ac5325157149877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216d536f94c023ea2d3dd0ca192c6cab.png)
A.1 | B.2 | C.-1 | D.±1 |
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2018-08-16更新
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582次组卷
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4卷引用:广东省惠州市崇雅实验学校2017-2018学年高二单元训练(数列)数学试题