名校
解题方法
1 . 已知数列
的各项均为正数,满足:对于所有
,有
,其中
表示数列
的前
项和,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c07ba166ca9af1ffde9dd49876b17a4.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004556ff0308ee9fa2703b3feff1da4.png)
A.0 | B.1 | C.![]() | D.2 |
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2020-02-14更新
|
146次组卷
|
3卷引用:上海市晋元高级中学2015-2016学年高二上学期期中数学试题
上海市晋元高级中学2015-2016学年高二上学期期中数学试题(已下线)专题04 数列(10个考点)【知识梳理+解题方法+专题过关】-2022-2023学年高二数学上学期期中期末考点大串讲(沪教版2020必修第三册+选修一)沪教版(2020) 25天高考冲刺 双新双基百分百11
2 . 下列四个命题中正确的是( )
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() |
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3 . 设无穷等比数列
的首项为
,公比为
,前
项和为
.则“
”是“
”成立的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.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/3f702986cba405635546481e8e140cb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a63801fa4cfc5d7eb49e443de8be44d.png)
A.充分非必要条件 | B.必要非充分条件 |
C.充要条件 | D.既非充分也非必要条件 |
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2020-01-29更新
|
160次组卷
|
3卷引用:2017届上海市普陀区高三上学期质量调研(一模)数学试题
名校
4 . 数列
的通项公式为
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a034a5ae04ba62269470a59b73c8705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6539b22a82fc2e91c884d5ca8b673d4.png)
A.1 | B.0 | C.0或1 | D.不存在 |
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名校
5 . 用记号表示求两个实数
与
的算术平均数的运算,即
已知数列
满足
则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e441451339de427558c507e2f7e35b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/744c7b16eb47f81e28ff548dfedfeeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/038ffb41b49399e387896d6340544a30.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知
,则当
时,数列
的极限是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7df58897000941447a728fa0b15fdf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd0eee3171fa7223e87af0fa95abfd10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
A.0 | B.1 | C.0或1 | D.不存在 |
您最近一年使用:0次
名校
7 . 设
是无穷等差数列
的前
项和(
),则“
存在”是
“该数列公差
”的
![](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/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58abe92020722722506c7b12c7879ac5.png)
“该数列公差
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85fa64abb0036dbff6a29f01b0c03899.png)
A.充分非必要条件 | B.必要非充分条件 |
C.充要条件 | D.既非充分也非必要条件 |
您最近一年使用:0次
2018-04-19更新
|
380次组卷
|
2卷引用:上海市普陀区2018届高三下学期质量调研(二模)数学试题
8 . 已知
均为正整数,记
为矩阵
中第
行、第
列的元素,且
,
(其中
,
);给出结论:①
;②
;③
④若
为常数,则
.其中正确的个数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61711964d779a0ccf40822d54599327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ba1bbe411bc71bca016d3fd82352f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9796a41add38a60f0f51baf2b091fbb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c81fb049eeb6c650dfa8e99b48e283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0bc0c3ffa6ce824a938cbd5fb872ced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a324462f329281c1cf43702fb56b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98b9641d6839dd6e88f6eef8eb946df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170f6687a89e2493e8d238b1151b4ae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfea4229d845472b23d5ff79721de02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb5a068280cda0f8bdaaa4636bbe92d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3b4d6a4ae5e02b7895dae2af2041886.png)
A.0个 | B.1个 | C.2个 | D.3个 |
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9 . 设
是直线
(
)与圆
在第一象限的交点,则极限![](https://staticzujuan.xkw.com/quesimg/Upload/formula/009bc9ad195ecbc1991b70e67ec1ad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76340954c70ecadbbd49bc8173cf021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e912227cd6a1c7bb6b69875340da853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7035ce63c77b441f544fed0b4975d3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/009bc9ad195ecbc1991b70e67ec1ad91.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-03更新
|
1466次组卷
|
4卷引用:上海市曹杨第二中学2018-2019学年高三下学期3月月考数学试题
上海市曹杨第二中学2018-2019学年高三下学期3月月考数学试题2015年全国普通高等学校招生统一考试理科数学(上海卷)(已下线)考向15 等比数列-备战2022年高考数学一轮复习考点微专题(上海专用)(已下线)课时35 圆的方程-2022年高考数学一轮复习小题多维练(上海专用)