1 . 在数列
,
中,已知
,
,且
,
,
成等差数列,
,
,
也成等差数列.
求证:
是等比数列;
设m是不超过100的正整数,求使
成立的所有数对
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4464b3b4eb6e52ee02f095aae84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663bbc5767b9cb453cb08e1f0a8e0602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec26e62d63154f465770cf91e49738c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bfccafa83afe5ee21eab6ef2b2c8852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b307291317dac187c2f3df1d12268939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7085d141e33ba0188e58fa2177d89ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cba31e8c939286cafff96e8d715a697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061ec664220f3983797c17cb152542b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/176c7bb5d8eca67af63f0d6faf2aecf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38a19cc5fcb4d4ddda044e66a8c5cb44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dcf9edea35dd203a8a3631cc4aa1eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d768f47a34f941657e86df1d42e9f9be.png)
您最近一年使用:0次
2016-12-03更新
|
1150次组卷
|
3卷引用:【市级联考】江苏省常州市2019届高三上学期期中教学质量调研数学(文)试题
【市级联考】江苏省常州市2019届高三上学期期中教学质量调研数学(文)试题2015届江苏省淮安市高三第五次模拟考试数学试卷(已下线)专题6.5 数列的综合问题(练)-江苏版《2020年高考一轮复习讲练测》