解题方法
1 . 已知数列的前
项和
,若数列
为等比数列,则
您最近一年使用:0次
2 . 已知等比数列
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36243198e5e20c56399e4ad5ac3c519.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396644ff5ee3b70af1421d5e6e539e5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36243198e5e20c56399e4ad5ac3c519.png)
您最近一年使用:0次
3 . 已知
轴上的点
,
,
,
满足
,射线
上的点
,
,
,
满足
,记四边形
的面积为
,且
恒成立,则区间长度
的最小值为_____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e92b8041e98e4f435acdbeb983efbe46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5755123f876868394b160608317eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b25286f6029da66ce5270aacd05184f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512a0a677988c1881a8fa457a88c5fd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e49f0172de00b37e1f3861a751a57dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da0eb3662f64f56c090473cbabb4814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420f40c58d5518aea8e83a99074807d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65433a22b15ea4e75432d74a1ccf3b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451a741e5af8cbfe82e129afb9eb763a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76d7c1b5ad91f8d7e92f02977904b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367a5b6ff7709c6e163aabe3b480463c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
您最近一年使用:0次
4 . 设数列
的前
项和为
,若对任意的正整数
,总存在正整数
,使得
,下列正确的命题是( )
①
可能为等差数列;
②
可能为等比数列;
③
均能写成
的两项之差;
④对任意
,总存在
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3693c7c942afef5517a3c18997c878df.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9771c216846438158f7f4495c45aaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
④对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a5608de4e387aca71819bb02259a96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afac6e9f8d367382dbdcebb81f2ec14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4003252b8e18325370b255b5b0bdc2a9.png)
A.①③ | B.①④ | C.②③ | D.②④ |
您最近一年使用:0次
2024-02-27更新
|
555次组卷
|
3卷引用:上海市金山中学2023-2024学年高二下学期3月月考数学试卷
名校
解题方法
5 . 已知正项数列
满足
,则数列
的前
项和为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28576e97b679dd69399eb2d2f18a258b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ebd611b6d967506edfd0e3cc861edc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
名校
解题方法
6 . 已知函数
,
,满足:①对任意
,都有
;②对任意
都有
.
(1)试证明:
为
上的严格增函数;
(2)求
;
(3)令
,
,试证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73c6b42f12d065a17923045f44d4ca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda9c13fc5efeefc73b70ef2093154a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958c91e0cc2cf4f17acb778de21846b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c199c596534dd80309fc1caf4c96b2.png)
(1)试证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a227a694dc404d1184578c7d278fd8d7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79a776eb388794b659f7c2d6498eb09.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5878e2bf9d209e149fcccbbb11c4bcbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00c795fb9ed112658be9513e668b552.png)
您最近一年使用:0次
名校
解题方法
7 . 数列
满足
,其中
为数列
的前
项和.
(1)判断数列
是否是等比数列,并说明理由;
(2)若
为数列
的前
项和,求
与
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f18b4f2f085b8e32b92862fdd42d5b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)判断数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa97c7ae99ad7a17417f75ea514afd6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1f2554444735b544debcd68f4cb28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13aababf2d1ee2f7c5336857f0fcb7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.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
8 . 设数列
的前n项和为
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5203b7d052f286a9fff176b00d7fd1df.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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76f4e6a54a32975c23ae52f5687e12a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5203b7d052f286a9fff176b00d7fd1df.png)
您最近一年使用:0次
9 . 若数列
满足
(
为正整数,
为常数),则称数列
为等方差数列,
为公方差.
(1)已知数列
,
的通项公式分别为:
,
,判断上述两个数列是否为等方差数列,并说明理由;
(2)若数列
是首项为1,公方差为2的等方差数列,在(1)的条件下,在
与
之间依次插入数列
中的
项构成新数列
:
,
,
,
,
,
,
,
,
,
,……,求数列
中前30项的和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595955aa3a2670abcd60c78a5086f2fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(1)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1165edc23b5782b5942ef7e79130bb94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19814dff8cdcec0e1a9eab38f4f16e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f803d745499bb0ea7cd963cb2f4c871e.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4741eb4c177d75ca74fe2d36e52ecbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cf52946ef832dd2fa7a82dcd6d1bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362832fa3d3c13c1eafd565349d66dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23cabc65fcefdd191930fbfa89cf125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8553a873958eb9d14c89c59ab5c317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a2fc7063bcdce2bee4cb0f4d748d72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9314bd1d7a6e070f4f2428f9a321804e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c992eaf396ef52255403bfca119e032c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9839f07d78de3e6d161e4e1eff25b9cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac9a8ceb6e6214002bbdbb71e7828110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ee8fc80a880ccceac24aa739fac39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f550f4135c46fbfb0c001e662cd8ff6.png)
您最近一年使用:0次
名校
解题方法
10 . 设数列
的前
项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6880bfd0a3ced301a889024a1629b297.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/7f3ce3863539a618a28853de3c5201d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6880bfd0a3ced301a889024a1629b297.png)
您最近一年使用:0次
2023-10-22更新
|
417次组卷
|
3卷引用:上海市晋元高级中学2023-2024学年高二上学期10月月考数学试题