在数列
中,
,数列
是公比为2的等比数列,设
为
的前n项和,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb34b6f01296502fd0f9adf8c78bea6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b708c8dcb2d66eb2ce0b3718a9cd924a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
A.![]() | B.![]() |
C.数列![]() | D.![]() |
2022·海南·模拟预测 查看更多[5]
海南省2022届高三数学全真模拟试题(一)(已下线)2022年高考考前20天终极冲刺攻略(三)【数学】(新高考地区专用) (5月30日)黑龙江省实验中学2021-2022学年高二下学期4月月考数学试题(已下线)专题16 等比数列-31.3.1 等比数列及其通项公式(同步练习提高版)
更新时间:2022-04-04 21:36:45
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【推荐1】已知数列
为等差数列,其前
项和为
,且
,下列选项错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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A.![]() | B.![]() | C.![]() | D.![]() ![]() |
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【推荐2】下列关于等比数列
单调性的结论不正确 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
A.若数列![]() ![]() |
B.若公比![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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【推荐1】已知数列
是公比为
的等比数列,且
,
,
成等差数列,则
的值可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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A.![]() | B.1 | C.![]() | D.-2 |
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【推荐2】已知等比数列
的公比为整数,
是数列
的前
项和,若
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de6e33f4455a10be635d52517a2df8b.png)
A.![]() | B.![]() |
C.数列![]() ![]() | D.数列![]() ![]() |
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