1 . 设
(
),
且为常数,若存在一公差大于0的等差数列
(
),使得
为一公比大于1的等比数列,请写出满足条件的一组
、
、
的值__________ .(答案不唯一,一组即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1d09671591397a292dee6069a64833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0e9d1ad9561d693958756ee8398218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086e9b14c35ef3c57b20f5e952ebf9c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ced7246280e4cb71987bee7cc17cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2020-02-29更新
|
218次组卷
|
6卷引用:上海市七宝中学2023届高三上学期期中数学试题
名校
解题方法
2 . 已知等比数列
满足
,则数列
的通项公式可能是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
_________ .(写出满足条件的一个通项公式即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50eba0640494a55d01cd9b37f293f9fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次
2023-03-20更新
|
401次组卷
|
8卷引用:安徽省六安市裕安区新安中学2022-2023学年高二下学期期中考试数学试题
安徽省六安市裕安区新安中学2022-2023学年高二下学期期中考试数学试题黑龙江省齐齐哈尔市普高联谊校2022-2023学年高二下学期期中数学试题广东省深圳市人大附中深圳学校2022-2023学年高二下学期期中数学试题广东省深圳市第三高级中学2022-2023学年高二下学期期中数学试题(已下线)模块一专题1《数列基础、等差数列和等比数列》单元检测篇B提升卷(高二下人教B版)(已下线)模块一 专题2《数列基础、等差数列和等比数列》单元检测篇B提升卷(高二北师大版)安徽省皖北县中联盟2022-2023学年高二下学期3月联考数学试题辽宁省锦州市某校2022-2023学年高二下学期第二次阶段性考试数学试题
名校
解题方法
3 . 已知
是无穷数列,且
,给出该数列的两个性质:①对于
中任意两项
,在
中都存在一项
,使得
;②对于
中任意项
,在
中都存在两项
,使得
.
(1)判断数列{2n}和数列
是否满足性质①(直接写出答案即可);
(2)若
,判断数列
是否同时满足性质①和性质②,说明理由;
(3)若
是递增数列,
,且同时满足性质①和性质②,证明:数列
为等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f3a5cd1567f0ec83b7ebb49c3766cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681ae1522a36768618f7ddaf74abbb7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70054cde112fe45b9d75f4b49f81cfca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf16339dca6781c6a4ad485c4b5a04e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffa2f783484bfec4389998cf7e21d82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf674fd486eada093c57c3147586341.png)
(1)判断数列{2n}和数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f1eaaee5ba6c66cb91fbbf3e6d58a9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc2966bb05a007c40e5a8ae411f534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
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