解题方法
1 . 数列
的前
项和为
,已知
,则( )
![](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/4566ab8c5558a1067646ba8a00db1a1b.png)
A.对于![]() ![]() | B.![]() ![]() |
C.对于![]() ![]() | D.若![]() ![]() ![]() |
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解题方法
2 . 已知
为正项数列
的前
项和,
,
,则( )
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9682b4a654710a7c6dff8f65b87d72b6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3 . 已知无穷数列
中,
是以10为首项,以
为公差的等差数列,
是以
为首项,以
为公比的等比数列
,对一切正整数
,都有
.设数列
的前
项和为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20655342f9ace8b50a50f5eae6f37beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74eb8a7738402df52d4a97262b85ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142876945177d2d9621b6842e3d51f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0af2dc59419e7a5e2d093c3d0d42a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c453d55bd2873e4469273132c421e7b3.png)
![](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)
A.当![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() | D.不存在![]() ![]() |
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2024-05-16更新
|
545次组卷
|
2卷引用:湖北省武汉市武昌区2024届高三下学期5月质量检测数学试卷
4 . 设
是各项为正的无穷数列,若对于
,
(d:为非零常数),则称数列
为等方差数列.那么( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4cf3c9b35c6e0863c581e160ac6a9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782fdf6345302a3d8814acf96f6b3acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
A.若![]() ![]() |
B.数列![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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5 . 已知函数
的定义域为
,且对任意的
,都有
,若
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86ec87e9730dbedf48cabae579c249f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3587ff064f9af01371279ab75d22116c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
6 . 已知等差数列
的首项
,公差
,在
中每相邻两项之间都插入
个数,使它们和原数列的数一起构成一个新的等差数列
,以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cf1092782a26be15b73c10d7c498de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
A.![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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2024-02-28更新
|
1075次组卷
|
8卷引用:河北省承德县第一中学等校2023-2024学年高二下学期开学联考数学试题
7 . 已知数列
:1,1,2,1,3,5,1,4,7,10,…,其中第1项为1,接下来的2项为1,2,接下来的3项为1,3,5,再接下来的4项为1,4,7,10,依此类推,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
A.![]() |
B.![]() |
C.存在正整数m,使得![]() ![]() ![]() |
D.有且仅有3个不同的正整数![]() ![]() |
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2024-02-28更新
|
252次组卷
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3卷引用:重庆市第一中学校2023-2024学年高二下学期开学考试数学试题
8 . 已知数列
满足:
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e98bbb6af2653589c3027021981e703.png)
A.![]() |
B.![]() |
C.![]() |
D.当![]() ![]() |
您最近一年使用:0次
名校
解题方法
9 . 对于数列
,若
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4efd8e5031909063c3453f6f19d313.png)
A.![]() | B.数列![]() |
C.数列![]() | D.![]() |
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10 . 定义在
的函数
满足
,且
.
都有
,若方程
的解构成单调递增数列
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba88ee768f02214a4b085f396aecbd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96a4a756b83abe863eedb8d3075dd82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acade84f384c0e8fe7799dfeef567512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/effb514ec98c94a17d6be803f81cadea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9952e82aec38777c6105a94cfecdfcc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
A.![]() |
B.若数列![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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