1 . 已知数列
是公差为
的等差数列,其前
项和为
;数列
是公比为
的等比数列,其前
项和为
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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2 . 设等差数列
的前
项和为
,若
,
,则
中最大的是
![](https://img.xkw.com/dksih/QBM/2015/7/1/1572159116730368/1572159122309120/STEM/c0fa3d93ba814f259f4789af04617ee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/2015/7/1/1572159116730368/1572159122309120/STEM/fa55ec70e78f4757864fc8e9b43f0513.png)
![](https://img.xkw.com/dksih/QBM/2015/7/1/1572159116730368/1572159122309120/STEM/4de5a97bbb9749108ed0b7d9a82cc029.png)
![](https://img.xkw.com/dksih/QBM/2015/7/1/1572159116730368/1572159122309120/STEM/d6a0a905803d4d729de2eaa2722dfdb6.png)
![](https://img.xkw.com/dksih/QBM/2015/7/1/1572159116730368/1572159122309120/STEM/fa55ec70e78f4757864fc8e9b43f0513.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9-10高一下·浙江宁波·期中
3 . 若无穷等差数列
的前
项和为
,且
,
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df775bbb96051716b1971fdfc42c210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ad422a03467f70121b4a3cd3c724d9.png)
A.在![]() |
B.![]() |
C.![]() |
D.![]() |
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13-14高一下·浙江湖州·期中
4 . 等差数列
中,
,公差
,那么使
的前
项和
最大的
值为
![](https://img.xkw.com/dksih/QBM/2015/7/3/1572164948549632/1572164954021888/STEM/92d38f15d7734112a0886a079fc03e70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfeb12b4aee769abe59c795f59d46df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2a482b048ada7bc981a416116fa2b6.png)
![](https://img.xkw.com/dksih/QBM/2015/7/3/1572164948549632/1572164954021888/STEM/92d38f15d7734112a0886a079fc03e70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2016-12-03更新
|
524次组卷
|
3卷引用:2013-2014学年浙江省湖州市属九校高一下学期期中考试数学试卷
(已下线)2013-2014学年浙江省湖州市属九校高一下学期期中考试数学试卷2014-2015学年浙江省台州中学高一下学期期中考试数学试卷苏教版(2019) 选修第一册 一蹴而就 第4章 4.2.3 等差数列的前n项和
5 . 设
是公差为
的无穷等差数列
的前
项和,则下列命题错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90bfe21c96489cb30c544d49ddb4c1c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.若数列![]() ![]() |
C.若数列![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次