名校
解题方法
1 . 设
为等差数列
的前
项和,若
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebdd0b84cac2d8136ae6b38e81e9a000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582c1eab03cfe330792197193bdb13cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a94aa7a51f7b4089c4b92e6a114d255.png)
A.数列![]() |
B.![]() |
C.![]() ![]() |
D.使![]() ![]() |
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2023-04-04更新
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997次组卷
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7卷引用:河南省洛阳市强基联盟2022-2023学年高二下学期3月月考数学试题