名校
1 . 数列
是以
为首项,
(
)为公比的等比数列,数列
满足
,数列
满足
,若
为等比数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466f052a797a7ad9711cee57f5208a4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45482d31d1d7448c9f3922b4d2a55331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b3d61ccb35014e3cbf93f7af510d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bcc423bd7f292372b6f47299572ee36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466f052a797a7ad9711cee57f5208a4c.png)
A.![]() | B.3 | C.![]() | D.6 |
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2017-04-02更新
|
1214次组卷
|
8卷引用:第22练 等比数列-2021年高考数学(文)一轮复习小题必刷
(已下线)第22练 等比数列-2021年高考数学(文)一轮复习小题必刷(已下线)第23练 等比数列-2021年高考数学(理)一轮复习小题必刷(已下线)考点6-2 等比数列(文理)(已下线)专题7 等比数列的性质 微点1 等比数列项的性质江西省新余市第一中学2017届高三高考全真模拟考试数学(理)试题安徽省蚌埠市2017届高三第二次数学质量检查理科数学试题安徽省蚌埠市2017届高三第二次(3月)教学质量检查数学(理)试题江西省新余市第一中学2017届高三高考全真模拟考试理科数学试题
12-13高三上·江苏扬州·阶段练习
解题方法
2 . 已知集合
.
⑴是否存在实数
,使得集合
中所有整数的元素和为28?若存在,求出
,若不存在,请说明理由;
⑵以
为首项,
为公比的等比数列前
项和记为
,对任意
,均有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90b2485d1e0a5bfd1075ef1767506f0.png)
⑴是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
⑵以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.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/29d5ec9ad92f37e64eccce922ab1b14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35eb4fe67d5a6378c3ac14def93d0d8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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