名校
1 . 设等比数列
的公比为
,前
项积为
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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2024-02-06更新
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922次组卷
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4卷引用:广东省广州市执信中学2024届高三下学期教学情况检测(一)数学试题
名校
解题方法
2 . 在等差数列
中,
,数列
的公差为
,前
项和为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a60fab9ac1eb590b1e3a9b1567f570.png)
(1)求
的值;
(2)下列两小题只选一小题 再作答.
选做①若公差
,且
成等比数列,求通项![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e46877f6bb0cbd3794d26eb09b87d9.png)
选做②若
,求数列
的前
项乘积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68cb09b3c3662dda48f3a58840e51574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/34a60fab9ac1eb590b1e3a9b1567f570.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05201ef79a5d5904f492845396fb5470.png)
(2)下列两小题只选一小题 再作答.
选做①若公差
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a4611d6e3db2b367b7b2009fb8579c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7f9f6e2960a7b82dedeb6e2cc494c3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e46877f6bb0cbd3794d26eb09b87d9.png)
选做②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59056cdc40fd65ea358643c2e8249ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28fe62f4c0059f9430ab76d68a07de7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68eee81e090b96819b7df54fc1bcc3a6.png)
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