名校
解题方法
1 . 已知
为等差数列,满足
,
,
为等比数列,满足
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a6082d0e231a93a53b01ac79de615d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9599ec97c1cd9ef85cfe12790254ff91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aaee408bdec05bbdfcd4b841a331e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbcd03d9ffc473515485c1e6ff0e3840.png)
A.![]() | B.![]() ![]() ![]() |
C.![]() | D.![]() ![]() ![]() |
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2023-02-22更新
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407次组卷
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2卷引用:皖豫名校联盟2022-2023学年高二下学期开学考试数学试题
名校
解题方法
2 . 已知a,b,c为非零实数,则下列说法正确的是( )
A.![]() |
B.![]() |
C.若a,b,c成等比数列,则![]() ![]() ![]() |
D.若a,b,c成等差数列,则![]() ![]() ![]() |
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2023-02-22更新
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4卷引用:湖南省永州市2022-2023学年高二上学期期末数学试题
3 . 设双曲线
的焦距为
,若
成等差数列,则双曲线的渐近线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dcc91c2ffb5571eaf944c34f5e8ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d6e7e03305ce819a63b754cab365c6c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-02-22更新
|
926次组卷
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3卷引用:云南省临沧市民族中学-2022-2023学年高二下学期期中数学试题
名校
解题方法
4 . 记
为数列
的前
项和,下列说法正确的是( )
![](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)
A.若对![]() ![]() ![]() ![]() |
B.若对![]() ![]() ![]() ![]() |
C.已知![]() ![]() |
D.已知![]() ![]() |
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4卷引用:广东省广州市铁一中学等三校2022-2023学年高二上学期期末联考数学试题
广东省广州市铁一中学等三校2022-2023学年高二上学期期末联考数学试题辽宁省铁岭市清河高级中学2022-2023学年高二下学期3月月考数学试题1.3等比数列 测试卷(已下线)高二数学第一学期期期末押题密卷04卷
名校
5 . 设等差数列
的前
项和为
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.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/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd478b1ba0e42545b45d505e2e84a140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
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6 . 在公比不为1的等比数列
中,对任意
,
,
,
成等差数列,
,则数列
的前n项和
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e840a6babaec810545b754bae6d9299d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5462efd6525b6d3c2924871cde889bc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0657d49cdf38e78335c4c6d66a790199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 自然界中存在一个神奇的数列,比如植物一年生长新枝的数目,某些花朵的花数,具有1,1,2,3,5,8,13,21……,这样的规律,从第三项开始每一项都是前两项的和,这个数列称为斐波那契数列.设数列
为斐波那契数列,则有
,以下是等差数列的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6fc39454b7dc1c5400c0129417c823.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-02-17更新
|
509次组卷
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3卷引用:浙江省金华十校2022-2023学年高二上学期期末数学试题
解题方法
8 . 已知椭圆
的焦距为
,且
成等差数列,则椭圆
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dcc91c2ffb5571eaf944c34f5e8ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知公差不为0的等差数列
的前
项和为
成等差数列,且
成等比数列.
(1)求
的通项公式;
(2)若
的前
项和为
.证明:
.
![](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/84b6a4eea9a433a20f02bb6e453f4dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e216bf7310c2334ad072ce6b02285223.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4991360dd5394695ae39b85e89122c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa33d6f116c61ab89224c1a9886861cd.png)
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|
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8卷引用:广东番禺中学2022-2023学年高二上学期期末数学试题
广东番禺中学2022-2023学年高二上学期期末数学试题河南省周口市项城市第一高级中学2022-2023学年高二上学期期末考试数学试题云南师范大学附属中学2022-2023学年高二上学期第二学段模块考试数学试题(已下线)重难点专题04 数列求和-2022-2023学年高二数学重难点题型分类必刷题(人教B版2019选择性必修第三册)云南师范大学附属中学2023届高三上学期高考适应性月考卷(六)数学试题(已下线)仿真演练综合能力测试(二)广东省广州市广东番禺中学2022-2023学年高二上学期期末数学试题云南省昆明市第一中学2023届高三下学期数学复习试题
10 . 自然环境下,海拔
至
范围内,海拔每增加
,气温就下降某一固定值,如果某地海拔
处气温为
,海拔
处气温为零下
,则该地海拔
处的气温为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3fb33e7fb8709bd8d5db686644d50b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f631cfdf4666db95beb923072ced8d95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1890f0b4e81634bb7e013412698640f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be775126d2c5e67129a3214048c8269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0017113f394bc42d821adeb220857cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91569488a7ec4093f5fdda3e980df971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2bd4f1b3a3f3e534c5c3b39266f1ac8.png)
A.零下![]() | B.零下![]() | C.零下![]() | D.![]() |
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