名校
1 . 已知数列
为等差数列,且
(1)求数列
的通项公式;
(1)设
,比较
与1的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b0912a2594815b7b51331570a78bef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaeb2a585a849372c992cb72beed76e3.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c4b5057e5db07f5312c7941513b03c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
名校
2 . 若各项均为正数的数列
的前
项和为
,且
.
(1)求数列
的通项公式;
(2)若正项等比数列
,满足
,
,求
;
(3)对于(2)中的
,若对任意的
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/c6251ad69cfee15714a502ebf24ae097.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若正项等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e96fafcc7b7f783d436f853449208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc62ed41aa804f4c8a44c71ce362a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7027d2a8b32f143fc93099bd9a48b49.png)
(3)对于(2)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec7d4df4f8bbe15cf245cb9edf4fbc80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2019-07-16更新
|
395次组卷
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4卷引用:江苏省扬州市高邮中学2020-2021学年高二上学期10月联考数学试题