名校
1 . 两个等差数列
和
,其前
项和分别为
,
,且
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236fe9db95868b438b2a9e62c688a801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db662896f7554955c94b0171619f3220.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-01-03更新
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8卷引用:河南省南阳市第一中学校2022-2023学年高二下学期第一次月考数学试题
2 . 图1是一个水平摆放的小正方体木块,图2,图3是由这样的小正方体木块叠放而成的,按照这样的规律放下去,至第七个叠放的图形中,小正方体木块的总数是( )
![](https://img.xkw.com/dksih/QBM/2021/4/30/2710973381566464/2785473794031616/STEM/bb96104420d14aa784f532b50ea7d06f.png?resizew=312)
![](https://img.xkw.com/dksih/QBM/2021/4/30/2710973381566464/2785473794031616/STEM/bb96104420d14aa784f532b50ea7d06f.png?resizew=312)
A.66 | B.91 | C.107 | D.120 |
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2021-08-14更新
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4卷引用:河南省洛阳市2020-2021学年高二下学期期中考试数学(文科)试题
河南省洛阳市2020-2021学年高二下学期期中考试数学(文科)试题河南省开封市五县部分校2021-2022学年高二下学期月考数学(文)试题(已下线)考点02 推理与证明-2022年高考数学(文)一轮复习小题多维练(全国通用)黑龙江省佳木斯市第一中学2021-2022学年高三上学期第四次调研考试理科数学试题
3 . 已知一个等差数列
的前
项和是310,首项为4,公差为6,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/0f3cb8d72bb2e281b943b3b430138ef7.png)
A.8 | B.9 | C.10 | D.11 |
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4 . 已知等差数列
的前
项和为
且公差
,若
,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/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4bd7fcb8ca4837b690bc779d8bd404.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-10-22更新
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6卷引用:河南省新乡市安阳市鹤壁市顶尖名校2020-2021学年高三10月联考数学理科试题
河南省新乡市安阳市鹤壁市顶尖名校2020-2021学年高三10月联考数学理科试题(已下线)第22练 等差数列-2021年高考数学(理)一轮复习小题必刷(已下线)专题14 等差数列——2020年高考数学母题题源解密(山东、海南专版)黑龙江省大庆实验中学2021届高三上学期第二次月考数学(文)试题黑龙江省嫩江市高级中学2020-2021学年高三上学期12月月考数学(文)试题(已下线)理科数学-2021年高考考前20天终极冲刺攻略(二)(课标全国卷)
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5 . 已知
是等差数列
的前
项和,若
,
,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/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbe291424dfae7c74f814710f792960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36243198e5e20c56399e4ad5ac3c519.png)
A.40 | B.80 | C.36 | D.57 |
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3卷引用:河南省商丘市第一高级中学2019-2020高二下学期期中考试数学(文)试卷
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解题方法
6 . 等差数列
的前
项和为
,
,
,等比数列
中,
,
,则
的值为
![](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/4818548de2563bc81198611cf3468f13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a1442c1ced17c65bbf72b8c2054a7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ded779955460cd2e08a4574bd5646dd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9c77ce4d6b6f7c75a8b84b5c3c6c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a9f28d2342d61e9fae0744b0a8a1cf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-06-04更新
|
342次组卷
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2卷引用:河南省焦作市沁阳市第一中学2019-2020学年高二下学期月考数学试题
7 . 已知等差数列
的前
项和为
,公差为
,若
,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/2398f658821ecd05f7cb1c6a286fda0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc99fa24f6df36da3bcc395ffca08f18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24309587dfc992fffa2402a2c4fe21b5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 自然数列按如图规律排列,若2013在第m行第n个数,则
等于( )
![](https://img.xkw.com/dksih/QBM/2020/6/29/2495244458041344/2497369586286592/STEM/0aa4949db23c4678a0cf36f91a318d1b.png?resizew=126)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53983b8d099c610cf168def5042dea6.png)
![](https://img.xkw.com/dksih/QBM/2020/6/29/2495244458041344/2497369586286592/STEM/0aa4949db23c4678a0cf36f91a318d1b.png?resizew=126)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
解题方法
9 . 记等差数列
的前
项和为
.若
,
,则公差
( )
![](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/c0bbb67593c95bab93ff67145ae95ea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5cc09a66cb35ef1ee5fce4dd3da8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
A.-8 | B.-4 | C.4 | D.8 |
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10 . 设等差数列
的前
项和为
,且
,
,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/c230012c41291355e5443f18dbe9e264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/006f006919e3a1836ac9a6f2b57af8a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af1f1b7e9e20d799ee3c06b89a0611c.png)
A.90 | B.110 | C.45 | D.55 |
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2020-02-10更新
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2卷引用:河南省开封市五县联考2019-2020学年高二上学期期末考试数学(文)试题