名校
解题方法
1 . 已知等差数列
满足:
,
,数列
的前n项和为
.
(1)求
及
;
(2)设
是首项为1,公比为3的等比数列,求数列
的前
项和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1861ae106363d31c7d21c6ca69e5656c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/645804019288a78ed7483b06f410cecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b708c8dcb2d66eb2ce0b3718a9cd924a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bfccafa83afe5ee21eab6ef2b2c8852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b708c8dcb2d66eb2ce0b3718a9cd924a.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f24799142bff9db22b0811c094e782b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2448cf72af76b810310e4cfb9818e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb26cd1601fe7e76e1e2dc0b4909324a.png)
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2018-08-25更新
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9卷引用:福建省平和第一中学2021-2022学年高二12月质量检测数学试题
福建省平和第一中学2021-2022学年高二12月质量检测数学试题江西南昌西湖区南昌市外国语学校2020-2021学年高一下学期期中数学试题江西省宜春市樟树中学2017-2018学年高一下学期第三次月考数学(理)试题(已下线)2018年9月26日《每日一题》一轮复习(理)-等差数列与等比数列的综合应用(已下线)2018年9月28日《每日一题》一轮复习(文)-等差数列与等比数列的综合应用(1)湖南省岳阳市临湘市2021-2022学年高二上学期期末教学质量检测数学试题第1章 数列 单元检测题陕西省渭南市2023-2024学高三上学期教学质量检测一(一模)文科数学试题(已下线)期末真题必刷压轴60题(22个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)
名校
2 . 已知公差不为0的等差数列
的前n项和为
,且
,
,
成等比数列,
.
(1)求
的通项公式;
(2)若
,求n的值.
![](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/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e71f3e125f8b74d6e18d636f27f83cc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12775edeb574d495a58602fa5a04b6e5.png)
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2021-10-30更新
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2卷引用:福建省莆田第二十五中2021-2022学年高二上学期期中考试数学试题
3 . 已知数列
为等差数列,且
.
(1)求数列
的通项公式;
(2)若数列
满足
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57b8ebc35a6cbcc767352c002d34411.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bad860e2975ee4e2948a98b6ccbc9df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
名校
解题方法
4 . 设等差数列
的前
项和为
,已知
,
.
(1)求数列
的通项公式;
(2)在公比为
的等比数列
中,
,
,求
.
![](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/5c03d15d5cb7b49ecee2fe5e99fbaa75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad96f394d7e50a71709a818c67b75237.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)在公比为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1cf411c8f75433d8a9c5a817d02cf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c0bbe5276afcab9b9e465d7b504255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90bdbe36bada6b89e8558549bafab152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
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2021-08-27更新
|
176次组卷
|
2卷引用:福建省龙岩第一中学2021-2022学年高二上学期开学考试数学试题
解题方法
5 . 已知等差数列
前5项和为50,
,数列
的前
项和为
.
(1)求数列
的通项公式;
(2)若数列
满足
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c103d1af236be75242e7184b53caec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fca45d1886b88832d6a8ecbd04b1972.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74ed83735c6950ac33d4af2cee2c3c07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e8eff51e5a5d77e41a38bba48f19eb9.png)
您最近一年使用:0次
解题方法
6 . 将
这2021个整数中能被2整除余1且被3整除余2的数按从小到大的顺序构成一个数列,则该数列的项数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baa537c1d7bd0225d0b89292eb56c0b5.png)
您最近一年使用:0次
名校
解题方法
7 . 已知数列{an}的前n项和为Sn,且
Sn=2n﹣1.
(1)求数列{an}的通项公式,
(2)设函数f(x)=(
)x,数列{bn}满足条件b1=f(﹣1),f(bn+1)
.
①求数列{bn}的通项公式,
②设cn
,求数列{cn}的前n项和Tn.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求数列{an}的通项公式,
(2)设函数f(x)=(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6208bfe018a68fab36893cae9d1e1737.png)
①求数列{bn}的通项公式,
②设cn
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6222cd929d2c9ec339cd5b75d74c37f2.png)
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2020-11-23更新
|
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2卷引用:福建省福州市五校联考2022届高三上学期期中考试数学试题