名校
1 . 记
项正项数列为
,
,
,
,其前n项积为
,定义
为“相对叠乘积”,如果有2020项的正项数列
,
,
,
,
的“相对叠乘积”为2020,则有2021项的数列10,
,
,
,
,
的“相对叠乘积”为________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51e3959b92eb71104d82c3ebe492807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a50f815f27b1c935fe28935cb2d3ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a50f815f27b1c935fe28935cb2d3ff.png)
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2卷引用:湖南省长沙市长郡中学2021-2022学年高三上学期月考(三)数学试题
2 . 已知首项为
的等比数列
的前
项和为
,且
,
,
成等差数列.
(1)求数列
的通项公式;
(2)对于数列
,若存在一个区间
,均有
,则称
为数列
的“容值区间”.设
,试求数列
的“容值区间”长度的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.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/04e406b775bbaa0ae52dab5b7bd384a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb0b99a3e6cab1cde1bb575f2b228e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a888492710e24e13dcf15448f43e8174.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)对于数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621604766ddd141c86e37da5e71aef26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f144b23a6628703ef1b9546ecd418d16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621604766ddd141c86e37da5e71aef26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b477cc2b249061d0eb6839114172b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
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2020-02-15更新
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5卷引用:2020届湖南省长沙市雅礼中学高三第5次月考数学(文)试题
2020届湖南省长沙市雅礼中学高三第5次月考数学(文)试题2020届湖南省娄底市高三上学期期末教学质量检测数学文科试题2020届河南省平顶山市第一中学高三下学期开学检测(线上)文数试题(已下线)专题06 数列中的最值问题(第二篇)-备战2020年高考数学大题精做之解答题题型全覆盖(已下线)第5课时 课后 等比数列的前n项和
名校
3 . 已知有穷数列
的各项均不相等,将
的项从大到小重新排序后相应的项数构成新数列
,称
为
的“序数列”.例如,数列
、
、
满足
,则其“序数列”
为1、3、2,若两个不同数列的“序数列”相同,则称这两个数列互为“保序数列”.
(1)若数列
、
、
的“序数列”为2、3、1,求实数x的取值范围;
(2)若项数均为2021的数列
、
互为“保序数列”,其通项公式分别为
,
(t为常数),求实数t的取值范围;
(3)设
,其中p、q是实常数,且
,记数列
的前n项和为
,若当正整数
时,数列
的前k项与数列
的前k项(都按原来的顺序)总是互为“保序数列”,求p、q满足的条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960b682f983b053dc9064cf29c97e250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960b682f983b053dc9064cf29c97e250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c75058db8f3bce88c1ffd4eadf5f40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960b682f983b053dc9064cf29c97e250.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74fb1673b00229f4a9ba85fcf1e61d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65dc741612591192478ea0d1691e1b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
(2)若项数均为2021的数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1165edc23b5782b5942ef7e79130bb94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96c823084e586b1fea9e400e842a6e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b088cbabf546dd45f6218ea8d54926.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78cf45b8ebde48fe0771d7ac53c7fa77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d40ed6365809e9b4fa38fcb8850e75.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/835c74bbb8c61dd2d2f008664a8c8810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
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5卷引用:湖南省衡阳市第八中学2024届高三适应性考试数学试题
湖南省衡阳市第八中学2024届高三适应性考试数学试题上海市金山区2022届高三上学期一模数学试题(已下线)数学-2022年高考押题预测卷02(上海专用)(已下线)压轴题05数列压轴题15题型汇总-1上海市虹口高级中学2023-2024学年高二上学期期末考试数学试题
4 . 设
表示不大于
的最大整数.数列
的通项公式为
.
(1)求
,
,
,
;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817ec00343b1a02cfb5d63d839934daa.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97621cc9b8b9957dfdd62b998b190eaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30136113176ba7fe660e998d0873157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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2卷引用:湖南省百校大联考2021-2022学年高三上学期11月联考数学试题
5 . 将正整数
分解为两个正整数
的积,即
,当
两数差的绝对值最小时,我们称其为最优分解.如
即为6的最优分解,当
是
的最优分解时,定义
,则数列
的前100项和为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d26c1d3d2660dac7766e62edd2d4e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d01f7011cd3943c3c96f3ca345e603e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321c14bc003293f0098c5ad11f0db0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aabe37ca7be26f11ff86dd0660940e6d.png)
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2卷引用:湖南省岳阳地区2023届高三上学期适应性考试数学试题
6 . 在
个不同数的排列
中,若
时
(即前面某数大于后面某数),则称
与
构成一个逆序.一个排列的全部逆序的总数称为该排列的逆序数.记排列
的逆序数为
,如排列21的逆序数
,排列321的逆序数
,排列4321的逆序数
.
(1)求
、
,并写出
的表达式;
(2)令
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1071ac8657ef1c4e1ea7e0530196298d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c6842b4f7d5bc231e2c33b55261cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18db8b768e5060b3471415e4b55ac30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3799f12f1cd7361f0bce9fea0b7278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c709117ab1d3ef620883a732aed68b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f59061d84ba9db3cf6a114446549e75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee5497ff422a53cab2a728381478ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8c45e4c4ab30665338dd87a2258f23.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/806904740dfe923b069c7b37dbe74ece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3112a023956d795c027c304a1916f1d.png)
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解题方法
7 . 在一个数列中,如果对任意
,都有
为常数
,那么这个数列叫做等积数列,
叫做这个数列的公积.已知数列
是等积数列,且
,公积为
,记
的前
项和为
,则:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
__________ .
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8fa05c8934feeb57973e671bb8442e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28652e52c0b02a343e618935ea625cbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781311fb277b2bb6c4044e042a15f025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cefeddf71dca8ae824328df3f0e5e1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.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)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8fa05c8934feeb57973e671bb8442e.png)
您最近一年使用:0次
2016-12-03更新
|
857次组卷
|
5卷引用:2015届湖南省长浏宁三一中高三5月模拟考试文科数学试卷
2015届湖南省长浏宁三一中高三5月模拟考试文科数学试卷2015-2016学年湖南省株洲县五中高二下学期第一次月考理科数学试卷(已下线)专题9 周期数列 微点3 周期数列综合训练(已下线)专题13 等积数列 微点1 等积数列常见问题(已下线)专题13 等积数列 微点2 等积数列综合训练
8 . 依次将一数列的每相邻两项之积及原数列首尾项(仍为新数列的首尾项),构造新的数列,再把所得数列按照同样的方法不断构造出新的数列.现将数列1,2进行构造,第1次得到数列1,2,2;第2次得到数列1,2,
,2;第3次得到数列1,2,
,
,2;依次构造,第
次得到数列1,
,
,…,
,2;记
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f37c41b3d37ebff1242f840b5fe0c0.png)
___________ ,设数列
的前
项积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1253b1b19d6bae98c88cd786691ffc50.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ad4668cc927e277289b2af718f0d91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6648bc986a558fa32e752d28d3a68431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6648bc986a558fa32e752d28d3a68431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b328845a4b1881eee38084d5501224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc009bac335264081ce8a10cc0c7f0cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f37c41b3d37ebff1242f840b5fe0c0.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/87bd7d18f67e90a7c37fad4252e43c9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1253b1b19d6bae98c88cd786691ffc50.png)
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名校
9 . 对于
的子集
,定义
的“特征数列”为
,
,…,
,其中
,其余项均为0.例如:子集
的“特征数列”为0,1,1,0,0,…,0.若
的子集
的“特征数列”
,
,…,
满足
,
,
;
的子集
的“特征数列”
,
,…,
满足
,
,
,则
的元素个数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1550b36bd0d1abc421a529df223f1d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e54c671b678b9eb9bd214464da9eecf.png)
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您最近一年使用:0次
10 . 已知
均为非负实数,且
.
证明:(1)当
时,
;
(2)对于任意的
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4099e1919c5450fd97590c4858c2d37c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81224c37d3740e35f03d6ff902adfe24.png)
证明:(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d48e59fe8e97b6d8323bfe778e7bcc.png)
(2)对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c154ab0e89e6303f44aaeecf959454ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3f71ffa702e15a1a7cfd815463d49a2.png)
您最近一年使用:0次
2020-02-25更新
|
306次组卷
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2卷引用:湖南省岳阳市2024届高三下学期考情信息卷数学试题