名校
1 . 艾萨克牛顿是英国皇家学会会长,著名物理学家,他在数学上也有杰出贡献.牛顿用“作切线”的方法求函数
零点时给出一个数列
,我们把该数列称为牛顿数列.如果函数
有两个零点1和2,数列
为牛顿数列.设
,已知
,
,
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32cf0a1ebb799f4fe2ca5b50656f9812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9b61fcc95b52a39435c9159165a64f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d92c23c6c2530f80f700d4ca2a8ed113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0998bd7bdcf49633c773084eea9317.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/9b2778e2dadff4d91102e6046bb5def8.png)
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2023-03-30更新
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539次组卷
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4卷引用:上海市七宝中学2023届高三下学期3月月考数学试题
2 . 已知等比数列
的前项和为
,若
,则
的公比![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
__________ .
![](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/59cea61d7e8eeaa7c0ac12424e132f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
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3 . 在一个有穷数列的每相邻两项之间插入这两项的和,形成新的数列,我们把这样的操作称为该数列的一次“和扩充”.如数列1,2第1次“和扩充”后得到数列1,3,2,第2次“和扩充”后得到数列1,4,3,5,2.设数列a,b,c经过第n次“和扩充”后所得数列的项数记为
,所有项的和记为
.
(1)若
,求
,
;
(2)设满足
的n的最小值为
,求
及
(其中[x]是指不超过x的最大整数,如
,
);
(3)是否存在实数a,b,c,使得数列{
}为等比数列?若存在,求
b,c满足的条件;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb179b52814cf68ce86201e14c1dcae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
(2)设满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d9ec2496e67711ab849b0f8988cd50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7e9f86738335a22298559db41037a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7e9f86738335a22298559db41037a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f28ede5e4c703019a7250cb63503df94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fe1e778c9e668594c42b77459328c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf031d0c50f5013e0a8469d1f609d81.png)
(3)是否存在实数a,b,c,使得数列{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9fbbd9c88736e500f5251f97b08452.png)
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2023-03-28更新
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566次组卷
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6卷引用:上海市四校(复兴中学、奉贤中学、金山中学、松江二中)2023届高三下学期3月联考数学试题
名校
解题方法
4 . 已知函数
有两个零点
,数列
满足
,若
,且
,则数列
的前2023项的和为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2755fcabc5ee31d2fc498fe2c49b03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a9fcb1360f77d03b35f22931798057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33610d2a46105e3c8456257221d3d07b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4f51458f7e8c92a2a3c865f1d18b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2815b24f5a89be7ae53aed93182e8988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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名校
解题方法
5 . 已知等差数列共有
项,各项与公差
均不为零,若将此数列删去某一项后,得到的数列(按原来顺序)是等比数列,则所有数列
组成的集合为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49dac16bbcffa236fbee961ada16420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26206bb5dafe7e8f0ac3775a4b2029c5.png)
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2023-03-23更新
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575次组卷
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4卷引用:上海市六校2023届高三下学期3月联考数学试题
6 . 高斯是德国著名的数学家,近代数学奠基者之一,享有“数学王子”的称号,以他的名字定义的函数称为高斯函数
,其中
表示不超过x的最大整数.已知数列
满足
,
,
,若
,
为数列
的前n项和.
(1)证明:数列
是等比数列,并求数列
的通项公式;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aacac2cf1dd70cc65b1ca535a32c316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7def23f30138e0b7c4c1e498d6903a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e46bca035f977f168c82ad4fce6845bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce49ab12f75d0829be561a7b3ed42a4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3462d4e0565158697bc5a14107f7407c.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82c65a855b1eed9c43e6829f6c3bffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c444c4d2fd7d65c5c1434e44814895b9.png)
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2023-03-16更新
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1020次组卷
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4卷引用:上海市宝山区2023届高三下学期3月月考数学试题
上海市宝山区2023届高三下学期3月月考数学试题上海市延安中学2024届高三下学期3月月考数学试题(已下线)重难点02数列求和的五种解题方法-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)(已下线)第六篇 数论 专题2 数论函数 微点3 数论函数综合训练
解题方法
7 . 已知
是等差数列,
,
,数列
满足
,
,且
是等比数列.
(1)求数列
和
的通项公式;
(2)设
,求数列
的前
项和
,并判断是否存在正整数
,使得
?若存在,求出
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef3d4b4a6c6431458a382f5f14e88221.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b72ddd7de598464a37b10f03f67b904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d34f68ee457a42f8bea4686a7fdc0a01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79768a4e3970a18741cee3fbd8bcbdad.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5842974f2403024c77ac6508c30e5d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/257ea4539d187169a520e850f1c593ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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8 . 某地区森林原有木材存量为
,且每年增长率为
,因生产建设的需要每年年底要砍伐的木材量为
,设
为
年后该地区森林木材的存量.
(1)求
的表达式;
(2)如果
,为保护生态环境,大约经过多少年后,木材存储量能翻一番?(
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ee628efd6b2f7296c106dd5cbae42f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ce31ae5bf2f88af4db6ebe95174637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96ad2a5315cc4dd120bb806f0981bc0.png)
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名校
解题方法
9 . 记
为等比数列
的前
项和,若
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36243198e5e20c56399e4ad5ac3c519.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.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/03137da2707b2017e9dbf85267497b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36243198e5e20c56399e4ad5ac3c519.png)
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2023-03-12更新
|
1570次组卷
|
3卷引用:上海市三校(杨浦区上理工附中、虹口北虹中学、浦东北蔡中学)2023届高三下学期3月联考数学试题
上海市三校(杨浦区上理工附中、虹口北虹中学、浦东北蔡中学)2023届高三下学期3月联考数学试题(已下线)第4章 数列(基础、典型、易错、压轴)-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)四川省南充市第九中学2023-2024学年高二下期3月月考数学试卷
10 . 若数列
满足
,则称该数列为“切线-零点数列”,已知函数
有两个零点1、2,数列
为“切线-零点数列”,设数列
满足
,
,
,数列
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272b44a71d0bec02b3c4f3f05304f942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b24c2f0837fe6cf4160bc6de2690dbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea2fdda67d2a98caafce60658a57c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4f51458f7e8c92a2a3c865f1d18b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0998bd7bdcf49633c773084eea9317.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/9b2778e2dadff4d91102e6046bb5def8.png)
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2023-03-10更新
|
868次组卷
|
5卷引用:上海市南模中学2023届高三下学期5月月考数学试题