名校
1 . 已知
是等比数列,公比大于1,且
,
.记
为
在区间
中的项的个数,则数列
的前60项的和
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fb4b599e37a825bce2a0c29f09af8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a316124e688e76d6f330ffbea49d427d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf7181f019dec4eefd2dd092705050ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c320a0619c63a5b650a1a94c0a5679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e096395cf359ca14d80bef3ea199ba.png)
您最近一年使用:0次
2021-12-07更新
|
622次组卷
|
3卷引用:1.3等比数列检测题 B卷(综合提升)
名校
解题方法
2 . 已知数列
的前
项和为
,且满足
,
,
.
(1)证明:
为等比数列,并求数列
的通项公式;
(2)令
,其中
表示不超过
的最大整数,求数列
的前15项和
.
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79df6b501e8be189ef89bd39c000a4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34f86e5aaea193d51fa06c58abb3898b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a70aa10c5078d2ed248500fd13cb752.png)
![](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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ebc3123d1a95e8032be7a82261807a4.png)
您最近一年使用:0次
2021-12-05更新
|
1502次组卷
|
2卷引用:1.3等比数列检测题 B卷(综合提升)
20-21高二·全国·课后作业
3 . 已知
中,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1f7536ff4ed7450fabf9db859784a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eed39c7d611309b01476c15ab242308.png)
您最近一年使用:0次
20-21高二·全国·课后作业
4 . 已知函数
.设函数
,
,过点
作函数
的图象的所有切线,令各切点的横坐标按从小到大构成数列
,求数列
的所有项之和的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7c1b565741c07e20a7eebc159baa11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0370fc8d07c6249b7f4bf6aca20a7586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766085a9b9582ac4225efd811da72567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee4d106c2371c86f3fb863ee989d58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2316563595e29fd4279845ab8afc5ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db87ffceab6741bf496f69449cc728d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db87ffceab6741bf496f69449cc728d.png)
您最近一年使用:0次
5 . 设数列
的前
项和是
,令
,称
为数列
,
,…,
的“超越数”,已知数列
,
,…,
的“超越数”为2020,则数列5,
,
,…,
的“超越数”为( )
![](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/945d3a467b1c212578437f50146f56fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.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/96abfe2da27a63e6affb19a0c80236d9.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/6e5e369c19b97b165ae9879e58a2d80c.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/6e5e369c19b97b165ae9879e58a2d80c.png)
A.2018 | B.2019 | C.2020 | D.2021 |
您最近一年使用:0次
2021-10-05更新
|
922次组卷
|
7卷引用:河南省新蔡县第一高级中学2021-2022学年高二上学期10月半月考数学(文科)试题
河南省新蔡县第一高级中学2021-2022学年高二上学期10月半月考数学(文科)试题(已下线)第04周周练(拓展二:数列求和)重庆市西南大学附属中学2021届高三下学期第四次月考数学试题河南省新蔡县第一高级中学2021-2022学年高二上学期1月月考数学(文科)试题(已下线)2020年高考全国2数学理高考真题变式题11-15题(已下线)专题09 数列(选择题、填空题)-备战2022年高考数学(文)母题题源解密(全国甲卷)(已下线)专题11 数列前n项和的求法 微点10 数列前n项和的求法综合训练
解题方法
6 . 在数列
中,
,当
时,其前
项和
满足
.设
,数列
的前
项和为
.
(1)求
;
(2)求满足
的最小正整数
.
![](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/0704f453b2de48d36911f7db496bbf82.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/4ed880bda8ca110d1e18b7a2fbea0891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d5d1461b1f6acec5ee89e75b272641.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4dab157ef488251a79cc238c4d6eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
7 . 数列
依次为:1,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,…,其中第一项为
,接下来三项均为
,再接下来五项均为
,依此类推.记
的前
项和为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158b045c6172c4178d7aa52083e1489f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158b045c6172c4178d7aa52083e1489f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5296c0056db0e2b5331c9b9a6d45962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.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)
A.![]() | B.存在正整数![]() ![]() |
C.![]() | D.数列![]() |
您最近一年使用:0次
20-21高二·全国·课后作业
解题方法
8 . 已知各项均为正数的无穷数列
的前
项和为
,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8295efdbf9a59a1fd6bd9704d9639aa6.png)
.
(1)求数列
的通项公式;
(2)记
表示不超过
的最大整数,如
,
. 令
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8295efdbf9a59a1fd6bd9704d9639aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132e9579e58d8d5225e2340e1f43adf1.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba03c120d10fa49e2eef50081b442e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36445a39e80b03c663ac4b613ddc5d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e4f4a9e5e4a13f69ce673b9b2c87bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e595b1cc755cf0dd076e91cf9e9a3e5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc4889f52bb9adc3eb3e0e5c13443ec0.png)
您最近一年使用:0次
解题方法
9 . 已知数列
,
满足
,
,
.
(1)证明
为等比数列,并求
的通项公式;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898c16d2d7a559644c8f0484af9e44ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05bac54dbd8c9f2a100231aea7454de6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43733074e91ca7e7ed7744f54a4ccd5.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f4c02fbe1bbe174030b18e3814bb3a.png)
您最近一年使用:0次
2021-05-31更新
|
1698次组卷
|
8卷引用:本册综合卷(能力提升)-2020-2021学年高二数学单元测试定心卷(人教B版2019选择性必修第三册)
(已下线)本册综合卷(能力提升)-2020-2021学年高二数学单元测试定心卷(人教B版2019选择性必修第三册)河南省安阳市2021届高三三模拟考试理科数学试题(已下线)考点25 数列求和-备战2022年高考数学(理)一轮复习考点帮(已下线)考点24 数列求和-备战2022年高考数学(文)一轮复习考点帮河南省三门峡市2021-2022学年高三上学期第一次大练习理科数学试题(已下线)第7讲 数列求和9种常见题型总结 (2)(已下线)一轮复习大题专练27—数列(分组、并项求和)-2022届高三数学一轮复习(已下线)专题27 数列求和-2
10 . 设
是数列
的前
项和,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78d551e6cc415f570dc7fc49b825cb1.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceb2c03455b66b7014b3df7282c01db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78d551e6cc415f570dc7fc49b825cb1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-02-01更新
|
3891次组卷
|
11卷引用:突破4.3.2 等比数列的前n项和课时训练-【新教材优创】突破满分数学之2020-2021学年高二数学课时训练(人教A版2019选择性必修第二册)
(已下线)突破4.3.2 等比数列的前n项和课时训练-【新教材优创】突破满分数学之2020-2021学年高二数学课时训练(人教A版2019选择性必修第二册)(已下线)专题05 数列求和及综合应用-备战2021年高考数学二轮复习题型专练(新高考专用)(已下线)安徽省合肥市2021届高三下学期第二次教学质量检测理科数学试题(已下线)解密10 等差数列、等比数列(分层训练)-【高频考点解密】2021年高考数学(文)二轮复习讲义+分层训练(已下线)专题04 数列(3)安徽省淮南市2020-2021学年高三一模数学(理)试题安徽省淮南市2020-2021学年高三一模数学(文)试题安徽省淮南市2021届高三下学期一模理科数学试题安徽省淮南市2021届高三下学期一模文科数学试题(已下线)6.3 利用递推公式求通项(精讲)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)(已下线)专题11 数列前n项和的求法 微点9 转化化归法求和