1 . 已知数列
满足
(
,
),设数列
的前n项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64488d8a0b83309924e698b7e2c9ee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](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/54e2b98e3b1c3c3e642d0ddd20f49631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
您最近一年使用:0次
2 . 已知数列
单调递增,其前n项和为
,且
.
(1)求数列
的通项公式;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a6991575249a02f78595114a02728b.png)
,且
,求数列
的前n项和
.
![](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/2779a0a95daf7bd07d9dd33a7a36bd61.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a6991575249a02f78595114a02728b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0759ccace03ac9f1d903ec6bd3ff69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/684b935a7274130d081bfa7b2b938023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30136113176ba7fe660e998d0873157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2023-02-06更新
|
366次组卷
|
2卷引用:四川省攀枝花市2023届高三上学期第一次统一考试数学(理)试题
名校
解题方法
3 . 已知数列
满足
(
),设数列
的前
项和为
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64488d8a0b83309924e698b7e2c9ee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](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/92d3b466840923657b69ff10d3a5f337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942ec06e504421dc2f9d6082046f80f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
您最近一年使用:0次
2022-09-29更新
|
728次组卷
|
4卷引用:四川省攀枝花市2023届高三上学期第一次统一考试数学(理)试题
4 . 数列
满足
,且
,若
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7b49832a0b759f538a15f1537a84ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8de107bfca4d1db8497f5bdfc2e5752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-05-19更新
|
941次组卷
|
5卷引用:四川省攀枝花市2022届高三第三次统一考试理科数学试题
四川省攀枝花市2022届高三第三次统一考试理科数学试题辽宁省实验中学2021-2022学年高二下学期期中数学试题(已下线)第01讲 数列的概念与简单表示法(讲)1.2.2 等差数列与一次函数(同步练习提高版)(已下线)山东省日照市2023届高三一模考试数学试题变式题6-10
5 . 在①
,②
是
,
的等差中项,③
.这三个条件中任选一个作为已知条件,补充在下面的问题中,然后解答补充完整的题.
已知正项等比数列
的前n项和为
,
,且满足______(只需填序号).
(1)求数列
的通项公式;
(2)设
,求数列
的前n项和
.
注:若选择多个条件分别解答,则按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3483017f35801f12e7bcafe118ae52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d473bfcc52ebc119430335531488a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67fbb8454c6fe5001e937e8ab6d5beb8.png)
已知正项等比数列
![](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/039e4fe671d61e59b96ee525c9df43e8.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b08ac67cf429ba14a527e6f054018c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005852a14814cd0fcb5d3aad41d714a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
注:若选择多个条件分别解答,则按第一个解答计分.
您最近一年使用:0次
名校
6 . 在数列
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ab11b66a6705fa7ebc203b638fba8cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-03-15更新
|
1131次组卷
|
3卷引用:四川省攀枝花市第三高级中学校2021-2022学年高一下学期第一次月考数学(理)试题
名校
7 . 已知数列
是等差数列,
.
(1)求
的通项公式;
(2)求
的最大项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf3da897eb73b729f66bb0d700775c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2743d7f2173da0fe6d55dd38636c2d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2022-02-15更新
|
437次组卷
|
2卷引用:四川省攀枝花市第三高级中学校2021-2022学年高一下学期第一次月考数学(理)试题
8 . 在①
,②
,③
这三个条件中任选一个作为已知条件,补充在下面的问题中,然后解答补充完整的题.
设首项为
的数列
的前
项和为
,且满足______(只需填序号)
(1)求数列
的通项公式;
(2)设
,求数列
的前
项和
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3f217b40ce965450a2a7a706943d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9cdbc2371608f997c6c05ac646e816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79df6b501e8be189ef89bd39c000a4d.png)
设首项为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](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)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add02169a8f58417880df4e302a7c498.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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2022-01-28更新
|
484次组卷
|
2卷引用:四川省攀枝花市2022届高三第二次统一考试数学(理)试题