名校
解题方法
1 . 已知数列
的前
项和为
,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/cb2e1a1a12c7b2b63cb7e576c6c0c31e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd542cdf53d53f7ff2724a463572fdb2.png)
A.190 | B.210 | C.380 | D.420 |
您最近一年使用:0次
今日更新
|
559次组卷
|
4卷引用:陕西省西安市第一中学2024届高三下学期高考预测数学(文科)试题
陕西省西安市第一中学2024届高三下学期高考预测数学(文科)试题2024届河南省新高考联盟5月联考模拟预测数学试题陕西省安康市高新中学、安康中学高新分校2024届高三下学期5月模拟预测数学(理)试题(已下线)模型6 待定系数法构造数列问题模型(第5章 数列)
2 . 已知数列
的前n项和为
,且满足
,则
( )
![](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/234605545a58197b26d52799abbb17b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06fbdd2e3efbef1ff014df55b242eced.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
今日更新
|
402次组卷
|
3卷引用:河北省张家口市2024届高三下学期第三次模拟考试数学试卷
3 . 在半径为1的圆
中作内接正方形
,作正方形
的内切圆
,再作圆
的内接正方形
,依此方法一直继续下去.我们定义每作出一个正方形为一次操作,则至少经过( )次操作才能使所有正方形的面积之和超过
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb2204c3e822887f98b7ab08bd24a36.png)
A.9 | B.10 | C.11 | D.12 |
您最近一年使用:0次
名校
解题方法
4 . 记
的内角
的对边分别为
,若
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaecbe2cfa3762326d44acd01ad1850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
5 . 已知等差数列
的前
项和为
,
,
,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/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee7f18ec0020048985d101969880d93e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
A.7 | B.8 | C.10 | D.16 |
您最近一年使用:0次
6 . 已知
是等差数列,
,在数列
中
,若
是等比数列,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ec6378b3ed1b165f209a37fd7eed18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84820067c445af080cbd46ac97d0fe49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79768a4e3970a18741cee3fbd8bcbdad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d846f83e0bfdddf3138a0bb5ad256244.png)
A.6072 | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
7 . 等比数列
中,
,
,记
为
的前n项和,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d06fdfcb98f8666f57959bd0b809ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3299d1d394efc1381671b1632e6e87e1.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/9620357ea5be4037cfdccd09a27d3862.png)
A.![]() | B.![]() | C.![]() | D.0 |
您最近一年使用:0次
名校
8 . 若
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a21578ec63012d8c7bb3bdd3b47eeae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d6df06a5b85848dc4fa33327f8e07.png)
A.![]() | B.![]() | C.1 | D.![]() |
您最近一年使用:0次
名校
9 . 已知
为递增等差数列
的前n项和,且
为等差数列,则使得
成立的n的最小值为( )
![](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/713378353c4f0b3ee65e141952d12736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
A.2 | B.3 | C.4 | D.5 |
您最近一年使用:0次
名校
解题方法
10 . 记
的内角A,B,C的对边分别为a,b,c,
,则角
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056c511ce749bdb7b0ead815aff8afe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次