2011·广东惠州·三模
1 .
,
是方程![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/41ddcea539564b41a18b5d4598fb2d0b.png)
的两根, 数列
是公差为正的等差数列,数列
的前
项和为
,且![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/5c16accfb76a4c78932bde1d962c1f0a.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/603e6cb464b14892bdb6d566a39bfd20.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/c28572222f4247ea93777fed123c2ac8.png)
.
(1)求数列
,
的通项公式;
(2)记
=![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/8d4854fe1af245ab9896830a490ca3da.png)
,求数列
的前
项和
.
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/168cc16ceb9f4cd69332dd4f9a920f3c.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/97cdea0962534c938ea62313622404c2.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/41ddcea539564b41a18b5d4598fb2d0b.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/3b9b10408c34464eb39b8e2a454be0de.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/5f639cc0acc84f84a435446b3b655db2.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/2010e1fbb7364aa7ac6e1be91d33360c.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/d20b91b126a441c19c0b4b109a064275.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/5c16accfb76a4c78932bde1d962c1f0a.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/5c16accfb76a4c78932bde1d962c1f0a.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/603e6cb464b14892bdb6d566a39bfd20.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/c28572222f4247ea93777fed123c2ac8.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/52362ab1dded484f8d11986e91a89a10.png)
(1)求数列
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/5f639cc0acc84f84a435446b3b655db2.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/2010e1fbb7364aa7ac6e1be91d33360c.png)
(2)记
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/7f940d54dad64787b8165ba9aa104e11.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/8d4854fe1af245ab9896830a490ca3da.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/c28572222f4247ea93777fed123c2ac8.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/27f4916c4be94e3e8db5d02458a76de7.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/d20b91b126a441c19c0b4b109a064275.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230160248832/1571230165917696/STEM/6e1db1ba662d4d4f815b771dbcdc864d.png)
您最近一年使用:0次
2010·山西临汾·模拟预测
解题方法
2 . 已知等差数列
的公差大于0,且
是方程
的两根,数列
的前n项的和为
,且
.
(1) 求数列
,
的通项公式;
(2) 记
,求证:
.
![](https://img.xkw.com/dksih/QBM/2011/10/17/1570320092807168/1570320098025472/STEM/4ead5d245fa147ac9361e2fa15d44adc.png?resizew=31)
![](https://img.xkw.com/dksih/QBM/2011/10/17/1570320092807168/1570320098025472/STEM/49908ce0c6c547399e6ca3cf9ad13337.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2011/10/17/1570320092807168/1570320098025472/STEM/e2e651b8e1784816842965c06bdd0ed8.png?resizew=115)
![](https://img.xkw.com/dksih/QBM/2011/10/17/1570320092807168/1570320098025472/STEM/f37be12ba31a43978227767c628fc979.png?resizew=29)
![](https://img.xkw.com/dksih/QBM/2011/10/17/1570320092807168/1570320098025472/STEM/3bf4b3c74c984a29b5b2d9b531714b38.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2011/10/17/1570320092807168/1570320098025472/STEM/9d36ca29a426444d91eeb7b2f9282d01.png?resizew=84)
(1) 求数列
![](https://img.xkw.com/dksih/QBM/2011/10/17/1570320092807168/1570320098025472/STEM/008bac06405d480eb207aa618fc44133.png?resizew=31)
![](https://img.xkw.com/dksih/QBM/2011/10/17/1570320092807168/1570320098025472/STEM/f37be12ba31a43978227767c628fc979.png?resizew=29)
(2) 记
![](https://img.xkw.com/dksih/QBM/2011/10/17/1570320092807168/1570320098025472/STEM/1a69dd05a3e04c148a3488dd39d7ba8d.png?resizew=73)
![](https://img.xkw.com/dksih/QBM/2011/10/17/1570320092807168/1570320098025472/STEM/2367383e58f94504872b67f0735702b6.png?resizew=59)
您最近一年使用:0次
9-10高一下·浙江宁波·期中
3 . 已知数列{an}的前n项和为Sn,且an是Sn与2的等差中项,数列{bn}中,b1=1,点P(bn,bn+1)在直线x-y+2=0上.
(1)求a1和a2的值;
(2)求数列{an},{bn}的通项an和bn;
(3)设cn=an·bn,求数列{cn}的前n项和Tn .
(1)求a1和a2的值;
(2)求数列{an},{bn}的通项an和bn;
(3)设cn=an·bn,求数列{cn}的前n项和Tn .
您最近一年使用:0次
9-10高一·浙江杭州·期中
名校
4 . 黑白两种颜色的正六边形地面砖按如图的规律拼成若干个图案:
![](https://img.xkw.com/dksih/QBM/2014/1/16/1571484737544192/1571484743172096/STEM/2762e54720394cfbafb5edc84d0d8d07.png?resizew=321)
则第
个图案中有白色地面砖__________________ 块.
![](https://img.xkw.com/dksih/QBM/2014/1/16/1571484737544192/1571484743172096/STEM/2762e54720394cfbafb5edc84d0d8d07.png?resizew=321)
则第
![](https://img.xkw.com/dksih/QBM/2014/1/16/1571484737544192/1571484743172096/STEM/59778cef5a524ab6b7746f233fe700c8.png?resizew=12)
您最近一年使用:0次
2016-12-03更新
|
1772次组卷
|
30卷引用:2012届广东省华附、省实、广雅、深中四校高三上学期期末联考文科数学
(已下线)2012届广东省华附、省实、广雅、深中四校高三上学期期末联考文科数学2014-2015学年广东省珠海实验中学高二上学期期中考试文科数学试卷2014-2015学年广东省汕头南澳中学高二下学期期中考试文科数学试卷(已下线)浙江省富阳市场口中学2009—2010学年度高一数学期中试卷(已下线)2010年江苏省南京六中高一第二学期期末考试数学试卷(已下线)2010年海南省嘉积中学高一下学期期末考试(理科)数学卷(已下线)2010-2011年东北师大附中高二下学期期中考试文科数学(已下线)2010-2011学年江苏省南京六中高一下学期期末考试数学(已下线)2010-2011学年海南省嘉积中学高一下学期教学质量检测(三)数学(理)(已下线)2011-2012学年陕西省渭南市高新中学高二上学期期中考试数学试卷(已下线)2011-2012学年河南省周口市四校高二下期中理科数学试卷(已下线)2011-2012学年甘肃省白银市平川中恒学校高二下期中文科数学试卷(已下线)2013-2014学年内蒙古包头三十三中高二上期中考试文数学试卷2014-2015学年山东省滕州市一中高二上学期期中考试理科数学试卷2014-2015学年福建省德化一中高一下学期期末质量检查数学试卷2015-2016学年陕西省西安市第七十中学高二10月月考文科数学试卷2015-2016学年甘肃省会宁二中高二下期中文科数学试卷2017届福建闽侯县二中高三上期中数学(理)试卷河北省石家庄市2016-2017学年高二下学期期末考试数学(文)试题浙江省绍兴蕺山外国语学校2015-2016学年高一下学期期中数学试题高中数学人教A版必修5 综合复习与测试 (1)【全国百强校】宁夏银川一中2018-2019学年高二上学期期末考试数学(文)试题陕西省延安市黄陵中学高新部2019-2020学年高二上学期期末考试数学(理)试题上海市上海外国语大学附属外国语学校2017-2018学年高二上学期期中数学试题吉林省辽源市田家炳高级中学2019-2020学年高一下学期期中考试数学试题黑龙江省海林市朝鲜族中学2019-2020学年高一下学期期中线上考试数学试题广西兴安县第三中学2018-2019学年高二上学期期中考试数学试题人教B版(2019) 选修第三册 一蹴而就 第五章 5.1.1 数列的概念新疆莎车县第一中学2021-2022学年高二下学期期中考试数学(文)试题人教A版(2019) 选修第二册 数学奇书 第四章 数列 4.1 数列的概念 第2课时 数列的递推公式与数列的和
2012·广东云浮·一模
5 . 已知函数
的图象是曲线C,点
是曲线C上的一系列点,
曲线C在点
处的切线与y轴交于点
.若数列
是公差为2的等差
数列,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b43c9b0eac3d27c1bf7b6c3d9233ed.png)
(1)分别求出数列
与数列
的通项公式;
(2)设O为坐标原点,
表示
的面积,求数列
的前项n和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5bed05e0540f8779402aad99fa275ac.png)
曲线C在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71b9f90b48b86a409dc8d9aaabefc09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5010b2e9175fdc6fbf5bf88541421d27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
数列,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b43c9b0eac3d27c1bf7b6c3d9233ed.png)
(1)分别求出数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设O为坐标原点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c75e563a1219cc5b71503a618ecfb7d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68eee81e090b96819b7df54fc1bcc3a6.png)
您最近一年使用:0次
2012·广东汕头·一模
6 . 已知某算法的流程图如图所示,将输出的
值依次记为
,
,![](https://img.xkw.com/dksih/QBM/2012/1/16/1570694211166208/1570694216507392/STEM/d76a8fe27a1a43b1818593c797d155a8.png?resizew=100)
(1)若程序运行中输出的某个数组是
,则![](https://img.xkw.com/dksih/QBM/2012/1/16/1570694211166208/1570694216507392/STEM/02b66389adc249d1ad9c2c0166ca7c3d.png?resizew=23)
___ ※__ ;
(2)程序结束时,共输出
的组数为___ ※__ .
![](https://img.xkw.com/dksih/QBM/2012/1/16/1570694211166208/1570694216507392/STEM/727a06cee9554852b53735471d75bea3.png?resizew=42)
![](https://img.xkw.com/dksih/QBM/2012/1/16/1570694211166208/1570694216507392/STEM/617f09936209415f9a66bcc8a600fe34.png?resizew=52)
![](https://img.xkw.com/dksih/QBM/2012/1/16/1570694211166208/1570694216507392/STEM/28aef0cf80774443a618f9b7675a53b2.png?resizew=56)
![](https://img.xkw.com/dksih/QBM/2012/1/16/1570694211166208/1570694216507392/STEM/d76a8fe27a1a43b1818593c797d155a8.png?resizew=100)
(1)若程序运行中输出的某个数组是
![](https://img.xkw.com/dksih/QBM/2012/1/16/1570694211166208/1570694216507392/STEM/b4c9c74c0e23494eb00edd9a7d266dad.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2012/1/16/1570694211166208/1570694216507392/STEM/02b66389adc249d1ad9c2c0166ca7c3d.png?resizew=23)
(2)程序结束时,共输出
![](https://img.xkw.com/dksih/QBM/2012/1/16/1570694211166208/1570694216507392/STEM/727a06cee9554852b53735471d75bea3.png?resizew=42)
![](https://img.xkw.com/dksih/QBM/2012/1/16/1570694211166208/1570694216507392/STEM/7265817f-5211-46e8-8b7a-303d6635c0c7.png?resizew=173)
您最近一年使用:0次
10-11高三·广东中山·阶段练习
7 . 已知数列
中,
,前
项和为
,且点
在直线
上.计算
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ff52e61f29d5165a6f2b70fbdb6b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b979396a703fb14715ba39232f5786a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cbb9a5d7689d388dd8457d831156af.png)
您最近一年使用:0次
10-11高二·广东揭阳·阶段练习
8 . 已知函数f(x)=
(a、b为常数且a≠0)满足f(2)=1且f(x)=x有唯一解.
(1)求f(x)的表达式;
(2)记xn=f(xn﹣1)(n∈N且n>1),且x1=f(1),求数列{xn}的通项公式.
(3)记 yn=xn•xn+1,数列{yn}的前n项和为Sn,求证Sn<
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdf5a24381f3978977c5656630c8693f.png)
(1)求f(x)的表达式;
(2)记xn=f(xn﹣1)(n∈N且n>1),且x1=f(1),求数列{xn}的通项公式.
(3)记 yn=xn•xn+1,数列{yn}的前n项和为Sn,求证Sn<
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
您最近一年使用:0次
10-11高三下·重庆万州·阶段练习
真题
名校
9 . 已知等差数列
的前
项和为
,满足
,且
成等比数列.
(1)求
及
;
(2)设
,数列
的前
项和为
,求
.
![](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/b1dfe5b322577f02fd19caab8cf20170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcd9a1492c60152f2e32604cd519e72.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d076655205e34c85aaf31c3b0549a5.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2016-11-30更新
|
3994次组卷
|
10卷引用:2011届广东省汕头市高三四校联考数学理卷
(已下线)2011届广东省汕头市高三四校联考数学理卷(已下线)2011届重庆市万州二中高三下学期第一次月考考试数学理卷(已下线)2011届江西省莲塘一中高三习题精编单元练习12数学文卷(已下线)2010-2011年河南省驻马店确山二高高二上学期期中考试文科数学2011年普通高中招生考试北京市高考文科数学(已下线)2012届福建省厦门第一中学高三上学期期中考试理科数学【校级联考】辽宁省朝阳市重点高中2019届高三第四次模拟考试理科数学试题【市级联考】辽宁省朝阳市重点高中2019届高三第四次模拟考试文科数学试题辽宁省沈阳市东北育才学校2019-2020学年高三上学期第三次模拟数学(文)试题江苏省南京市秦淮中学2019-2020学年高二上学期期末数学试题
2011·广东深圳·一模
10 . 数列{
}的各项均为正数,Sn为其前n项和,对于任意n∈N*,总有
,Sn,
成等差数列.
(1)求数列{
}的通项公式;
(2)设数列{
}的前n项和为Tn,且
,求证:对任意实数x∈(1,e](e是常数,e=2.71828…)和任意正整数n,总有Tn<2;
(3)正数数列{cn}中,
=(cn)n+1(n∈N*),求数列{cn}中的最大项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d53ddc235b5a08cca7e17b818ad7afe.png)
(1)求数列{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)设数列{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d6f9579c64a41325ee838a904893b2.png)
(3)正数数列{cn}中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dedce3064cdaf30d62ee38aabc86030e.png)
您最近一年使用:0次