1 . 已知等比数列
满足
,
;数列
满足
.
(1)求数列
,
的通项公式;
(2)设
,数列
的前
项和为
,若不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25fc6e4698a74a39097e891812c976ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de6e33f4455a10be635d52517a2df8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7654598f099178e5a13bb5ca3d1b3c3d.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/929302b754e3af34156322eed55933cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c88a7ef007c78a93e33bd77c4396626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa48b5eaba41f29c89c3be3b02d51b95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2020-09-01更新
|
944次组卷
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2卷引用:福建省宁德市2019-2020学年高一下学期期末考试数学试题
名校
2 . 在等差数列
中,
是
的前
项和,满足
,
,则有限项数列
,
,…,
,
中,最大项和最小项分别为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f280e64f6138416cb27e876eeffb16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce10b6ad1acc4b6425488be763c6faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc0a7d048a6bc3f2f8e2c3e5a602eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4be249f216849cbe99254a71b9f656f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b434a881a8610481c149aa0e540944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f163e4e06167d172d936d28783b2bcb0.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2020-08-14更新
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1534次组卷
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5卷引用:福建省宁德第一中学2023-2024学年高二上学期9月月考数学试题
福建省宁德第一中学2023-2024学年高二上学期9月月考数学试题上海市七宝中学2019-2020学年高一下学期期末数学试题(已下线)第22练 等差数列-2021年高考数学(理)一轮复习小题必刷(已下线)4.2.3 等差数列的前n项和(2)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)湖北省武汉市重点中学4G+联合体2022-2023学年高二上学期期末联考数学试题
名校
3 . 已知数列
的前n项和
数列
的前n项和
则
的最小值____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d8b970bf7f2451e293a3a5d5bb8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e289bad310f2a222a3f82a1239f7d97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807aa7f208cd051f843b29cc3c1c334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99d200aac7c303cc885b22406e18ac90.png)
您最近一年使用:0次
2020-05-06更新
|
946次组卷
|
5卷引用:福建省宁德第一中学2023-2024学年高二上学期9月月考数学试题