解题方法
1 . 在公比大于零的等比数列
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
_______ ,数列
的前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac633587ba2da63197c35031722602db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38c5d56a437f36bde9ce723233e0063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.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/04c2864e2ec3416cc4c081ac1f71a0af.png)
您最近一年使用:0次
2 . 设数列
满足
,
,
,则:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/402133c4ad28e605aa2c5ebb619bbb57.png)
______ ;
(2)数列
中最小项对应的项数
为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/309d0c43e8544b431a50af7b66da1506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af8b2b6f0cca6e9d4843c6979ceb0ce1.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/402133c4ad28e605aa2c5ebb619bbb57.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0662b4b4c8b6c0583d7a747d9d696dba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
3 . 《九章算术》“竹九节”问题;现有一根9节的竹子,自上而下各节的容积成等差数列,上面4节的容积共3升,下面3节的容积共4升,则自上而下的第1节的容积为_______ ,这9节竹子的总容积为_______ .
您最近一年使用:0次
2019-10-22更新
|
413次组卷
|
5卷引用:湖南省常德市部分重点中学2019-2020学年高三上学期10月联考文科数学试题
名校
4 . 将正整数
分解成两个正整数的乘积有
,
,
三种,其中
是这三种分解中两数差的绝对值最小的,我们称
为
的最佳分解.当
且
是正整数
的最佳分解时我们定义函数
,例如
.则
的值为___________ ,数列
的前
项的和为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/505ce232f5f27e5de6d336b327df64d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1c2ffd50c810f3925d51e69c1df588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085a73c2b8fb60fa810642040b599a5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085a73c2b8fb60fa810642040b599a5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085a73c2b8fb60fa810642040b599a5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bee5314777c246bbcbdb90ed0f66351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59cd0508298e162f77b5518c75e8d55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c559727a3490e7bac1d87694d4b80b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6531243485443de37bab16470298f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c38f0c2a13c64491bc7a823242fa399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01f77858b8c28176bfb4473e99c8b002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6567511bb9486b2ca7452b870abd2a1f.png)
您最近一年使用:0次
2018-12-17更新
|
305次组卷
|
2卷引用:【省级联考】湖南省五市十校教研教改共同体2019届高三12月联考理科数学试题
5 . 当
为正整数时,定义函数
表示
的最大奇因数.如
,….记
.则(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03bc264be940f713d92d52b7066c078.png)
_____ .(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aca61695c187c75bec7100f012631c6.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e06998c7a2379982ac3633030a8bea3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f04be5bcdbdd4e5d27d78954e5a073c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a6f467b5efdc2bc08c6ae66469ea3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03bc264be940f713d92d52b7066c078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aca61695c187c75bec7100f012631c6.png)
您最近一年使用:0次
真题
名校
6 . 某校数学课外小组在坐标纸上,为学校的一块空地设计植树方案如下第
棵树种植在点
处,其中
,
,当
时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd4eac48146a7cf3fa85b4d2bbd8b749.png)
表示非负实数
的整数部分,例如
,
.
按此方案,第6棵树种植点的坐标应为___________ .第2008棵树种植点的坐标应为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3666e6e4a90abdd140edb48aee46ccd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60302649eb940748da818199e55da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cda6ab0f37a6a39baffa6c98dc11dc16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c972cbd63decec197aec1bdc306de67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd4eac48146a7cf3fa85b4d2bbd8b749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd4c9186a6f95dd1679f5e82c9cdecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f336b94d041aee3e4e2424aa9631271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76e8bf7eee46086bb91c9e5a86cdb366.png)
按此方案,第6棵树种植点的坐标应为
您最近一年使用:0次
2019-01-30更新
|
1328次组卷
|
6卷引用:湖南省长沙市雅礼中学2021-2022学年高三上学期入学考试数学试题
湖南省长沙市雅礼中学2021-2022学年高三上学期入学考试数学试题2008年普通高等学校招生全国统一考试(北京卷理科)(已下线)考向26 数列的概念与简单表示(重点)-备战2022年高考数学一轮复习考点微专题(新高考地区专用)2008 年普通高等学校招生考试数学(理)试题(北京卷)(已下线)重组卷04北京市人大附中2022-2023学年高二数学期末复习参考试题(1)
7 . 设
为数列
的前n项和,
则
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
_____ ;
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6764fe32f1ad8d4731c147ae413d6e41.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b745150753a946cd341eb441bb7b87a4.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6764fe32f1ad8d4731c147ae413d6e41.png)
您最近一年使用:0次
2016-12-02更新
|
3891次组卷
|
9卷引用:2013年全国普通高等学校招生统一考试理科数学(湖南卷)
2013年全国普通高等学校招生统一考试理科数学(湖南卷)(已下线)2014年高考数学(理)二轮复习专题提升训练训练9练习卷人教版高中数学 高三二轮 专题14 数列求和及综合应用 测试福建师范大学附属中学2021届高三上学期期中考试数学试题江苏省泰州中学2020-2021学年高二上学期第二次月度检测数学试题江苏省苏高中2022届高三上学期9月期初考试数学试题(已下线)专题13 数列中的奇、偶项问题辽宁省沈阳市第一二O中学2022-2023学年高三上学期期末数学试题(已下线)第四章 数列单元总结(思维导图+知识记诵+能力培养)-【一堂好课】2022-2023学年高二数学同步名师重点课堂(人教A版2019选择性必修第二册)
2013·湖南长沙·一模
解题方法
8 . 方程
,
,2,3,4,
,
的曲线中,所有圆面积的和等于______ ,离心率最小的椭圆方程为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f5e589460df7b7c2cf1e8e05458a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23726f36908b47205056159225287ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b16ef1b58c55ceccc22eb49ce472be2.png)
您最近一年使用:0次
9 . 已知等差数列
的前n项和为
,若
,
,则![](https://img.xkw.com/dksih/QBM/2016/5/18/1572637359661056/1572637365805056/STEM/bc66309c2969411b9694ca786e87e997.png?resizew=79)
_______ ![](https://img.xkw.com/dksih/QBM/2016/5/18/1572637359661056/1572637365805056/STEM/f3982c6945084054bed8af8070f28464.png?resizew=48)
_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572637359661056/1572637365805056/STEM/cc485c76c63b47cc83f1b90456866613.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572637359661056/1572637365805056/STEM/68126a329030472e98871f1889abb8bb.png?resizew=151)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572637359661056/1572637365805056/STEM/05b1e426ada6463b99af09885d6b5dd0.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572637359661056/1572637365805056/STEM/bc66309c2969411b9694ca786e87e997.png?resizew=79)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572637359661056/1572637365805056/STEM/f3982c6945084054bed8af8070f28464.png?resizew=48)
您最近一年使用:0次
10-11高三上·湖南长沙·阶段练习
10 . 给定集合
,定义
中所有不同值的个数为集合A两元素和的容量,用L(A)表示,若
,则L(A)=___ ;若数列{an}是等差数列,设集合
,则L(A)关于m的表达式为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788369597548a0e4b6601188ccb25074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98cd3537c4a2a5f6bf8d2b973a10726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9010bb095765c0b0be1e1ecf5dacbf10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a873666089d9a9ca1bb14e2d00325d.png)
您最近一年使用:0次