名校
1 . 如果无穷数列
满足“对任意正整数
,都存在正整数k,使得
”,则称数列
具有“性质P”.
(1)若等比数列
的前n项和为
,且
,
,
.求证:数列
具有“性质P”;
(2)在(1)的条件下,若
对任意正整数n恒成立,求实数a的取值范围;
(3)如果各项均为正整数的无穷等比数列
具有性质“P”,且
、
、
、
四个数中恰有两个出现在
中,试求出这两个数的所有可能情况,并求出相应数列首项的最小值,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01eeee1d69e61fe0855b1043f338ddd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a4654db8df46552ead8781a1dd2f06d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)若等比数列
![](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/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/964df3e9308711d7e14fb624b0c25e2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eb7157f82fcbbd97f390c16f8ad1486.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72ee89759f4c4bed096660b3b0097ea.png)
(3)如果各项均为正整数的无穷等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b8497ab554fa6cd52ddbef669d1737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0534a62bfac9afc911c5f6313c5b687c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c6488d8b1f36e20983ab9c20183b4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f8e993a66c10340715c54c09571206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
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2 . 设
是等差数列
的前n项和,若
对任意
,
恒成立,则这样的等差数列有( )
![](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/cb9d2920e2f195637fd989303f4f17c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e10f2f74e201f77f853e9ed9078615c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2397df3279607612ea3cbef101ee0bf3.png)
A.0个 | B.1个 | C.2个 | D.3个 |
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3 . 设
为数列
的前
项和,
,则满足已知条件的
的个数是( ).
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3e25e98d737bf52c3b5d24f44de170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.0 | B.10 | C.11 | D.21 |
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4 . 已知
是离
最近的整数,如
,则无穷数列
中共有_______ 项的值等于100.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d249094ecb996458e35182d6b461299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cdebc35260923b8b2fca57270c93f21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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5 . 如果
,那么下列式子中一定成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 某地中学生社会实践小组为研究学校附近某路段交通拥堵情况,经实地调查、数学建模,得该路段上平均行车速度v(单位:
)与该路段上的行车数量n(单位:辆)的关系为:
,其中常数
.该路段上每日t时的行车数量
.已知某日17时测得的平均行车速度为
.
(1)求实数k的值;
(2)定义
,求一天内q的最大值(结果四舍五入到整数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ca55c030e7d88040525c4fb9a278f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896898512c789bfa9dccafbf3c3b872f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aff8d9b6533ff319420cdc5e8740b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61fe48554edf6fea3e09a504e582a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15bca4fc0b0fc4f8e492d8c1fe449c9b.png)
(1)求实数k的值;
(2)定义
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed98e841a92672c4741602c68a1ef417.png)
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7 . 半径为R的球的内接正三棱柱的侧面积(各侧面面积之和)的最大值为______ .
您最近一年使用:0次
2024-01-16更新
|
428次组卷
|
2卷引用:上海市复旦中学2023-2024学年高二上学期期末考试数学试卷
解题方法
8 . 若数列
的前n项和
满足
,且
,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/bf0a9e962ba4188bef3855f9ccf79414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7904757c16ce6903bd5580d2c37ed11.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
9 . 在
中,
,
,
,P为边AB上的动点,沿CP将
折起形成直二面角
,当
最短时,
=__ ,此时三棱锥
的体积为 ____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147de24f071e316b68fd2e78e3c84545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0067c9baea06837a97a622f2e2894730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932c1e7b8e4167bda4c7b2b9123fac0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed3bbaa0682963bde6dd9fd24e213d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5845c4d3fbf394a30e3ca459469588.png)
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2024-01-15更新
|
669次组卷
|
5卷引用:期末真题必刷易错60题(32个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)
(已下线)期末真题必刷易错60题(32个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)重庆市部分区2022-2023学年高二上学期期末联考数学试题四川省凉山州西昌市2023-2024学年高二上学期期末考试数学试题2024届高三新改革适应性模拟测试数学试卷四(九省联考题型)湖北省荆州市沙市中学2024届高三下学期3月月考数学试题
名校
解题方法
10 . 设
的内角
、
、
的对边长分别为
、
、
,
.
(1)若
,求角
的大小;
(2)若
,求
的值和
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](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/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489c5e63857056aff8f65e545d675bfa.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fd1e7b23db81e1cd71ac666322672f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/648309b790c6ba80f03b4cfc8e318fc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c4ca83816a3d559414157b609ac98b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-01-15更新
|
391次组卷
|
2卷引用:上海市建平中学2023-2024学年高二上学期期末质量监测数学试卷