收敛数列与有界数列无穷小数列乘以有界数列还是无穷小数列.我想问,如果一个数列收敛于a,那么这个收敛数列乘以有界数列还是收敛数列吗?如果收敛,那么极限是多少呢?
https://www.ouer.net/shuxue/1b2d.html - 2020-10-06 23:30:41 - 数学作业答案对于数列{an},定义数列{an+1-an}为{an}的等差数列,数列{an+1·an}为{an}的积数列,1)若{an}的等差数列是一个公差不为0的等差数列,试写出{an}的一个通项公式2)若{an}
https://www.ouer.net/chuzhongshuxue/u864.html - 2022-10-24 04:40:51 - 中学数学试题数列{Xn}有界是数列收敛的什么条件,数列{Xn}收敛是数列{Xn}有界的什么条件?RT.数列{Xn}有界是数列收敛的必要条件,数列{Xn}收敛是数列{Xn}有界的充分条件.
https://www.ouer.net/chuzhongshuxue/fs1.html - 2022-01-29 17:59:18 - 中学数学试题判断 题 等比数列公比是 1的等比数列是常数列吗?常数列一定是等比数列吗?.公比是 1的等比数列是常数列常数列不一定是等比数列:如:0,0,0,0,0,0
https://www.ouer.net/chuzhongshuxue/0x7e.html - 2022-11-21 00:40:32 - 中学数学试题若数列{an}是等比数列,则数列{an+an+1}( )可能是等比数列,也可能是等差数列.若公比q=1,则an=a1,即an是常数列(即是等比,又是等差,公差为0)∴an+a(n+1)=2a1,也是常数列
https://www.ouer.net/chuzhongshuxue/s5r8.html - 2022-10-15 20:03:51 - 中学数学试题如果一个数列即使等差数列,又是等比数列,则此数列有何特点?.这个数列为公差为0,公比为1的数列.1,不一定是常数列.2,肯定是非零数列.3,此数列不唯一.4,此数列存在.
https://www.ouer.net/chuzhongshuxue/0snc.html - 2022-11-19 17:25:29 - 中学数学试题若数列An是等差数列,则有数列Bn=a1+a2+a3+a4+...+an/n也是等差数列,类比上述性质,相应的,若数列Cn是等比数列,且Cn大于0,则有Dn= 也是等比数列.
https://www.ouer.net/chuzhongshuxue/f0c8.html - 2022-09-22 08:34:16 - 中学数学试题已知数列{an}是等差数列,且bn=2的an次方,求证数列{bn}是等比数列高二等比数列.
https://www.ouer.net/chuzhongshuxue/dnhz.html - 2022-08-03 16:31:52 - 中学数学试题如何证明cauchy数列是有界数列. 由实数定理可知柯西数列收敛因为收敛数列必有界显然可得柯西数列有界
https://www.ouer.net/shuxue/nmvv.html - 2021-03-23 09:52:30 - 数学作业答案数列 (14 10:42:51)已知等比数列{bn}与数列{an}满足bn=3an,(1)判断数列{an}是等差还是等比数列,并证明.设等比数列{an}公比为q,则对任意n>=2lg an-lg a(n
https://www.ouer.net/chuzhongshuxue/caaz.html - 2022-09-25 12:45:37 - 中学数学试题已知Sk表示数列{an}的前k项和,且Sk+1+Sk=ak+1(k∈N),那么此数列是( )A. 递增数列B. 递减数列C. 常数列D.
https://www.ouer.net/chuzhongshuxue/mn7.html - 2022-02-23 12:51:08 - 中学数学试题如果一个数列既是等差数列,又是等比数列,这个数列有什么特点?.
https://www.ouer.net/chuzhongshuxue/0x8a.html - 2022-11-21 00:41:46 - 中学数学试题若数列{an},则有数列bn=a1+a2+a3+**an/n也为等差数列,数列{an}是等比数列,且cn>0,则有dn=?也是等比数{an}是等差数列.dn=n次根下(a1*a2*a3*a4.
https://www.ouer.net/chuzhongshuxue/fxer.html - 2022-09-22 06:02:16 - 中学数学试题一道数学的数列题若数列{an}是等比数列,则数列{an+an+1}可能等比,也可能等差为什么.q=1时an+a(n+1)=2a1,既是等差数列也是等比数列(常数列)q=-1时,an+a(n+1)=0,是等差数列
https://www.ouer.net/chuzhongshuxue/s5r0.html - 2022-10-15 20:00:51 - 中学数学试题常数列属于等差数列和等比数列吗?
https://www.ouer.net/chuzhongshuxue/032x.html - 2022-11-22 02:14:49 - 中学数学试题“常数列既是等差数列,又是等比数列”为什么错呢?.忽略了特殊的常数列:0,0,0..由于0作为除数没有意义,因此0,0,0..不构成等比数列,只是等差数列!其他数列均满足!
https://www.ouer.net/chuzhongshuxue/0320.html - 2022-11-22 02:15:26 - 中学数学试题怎样快速判断数列是等差数列或等比数列.看通项公式,等比数列有公比,等差数列有公差.等比数列一定满足 a(n+1)/a(n)=一个常数等差数列一定满足a(n+1)-a(n)=一个常数如果已知前n项和Sn,
https://www.ouer.net/chuzhongshuxue/0snf.html - 2022-11-19 17:25:21 - 中学数学试题这是什么数列,并说明理由若数列{an}的前n项和为sn=kq^n-k(k≠0),则这个数列的特征是A等比数列B 等差数列C等比或等差数列D非等差数列.Sn=kq^n-kq≠1数列{an}为等比数列a1=
https://www.ouer.net/chuzhongshuxue/n34u.html - 2022-03-29 07:48:01 - 中学数学试题已知数列{bn}是等差数列,a>0,求证数列{an的b次方}是等比数列.an^bn/an^b(n-1)=an^[bn-b(n-1)]=an^d,这是个常数,所以是等比数列bn-b(n-1)=d
https://www.ouer.net/chuzhongshuxue/f6u9.html - 2022-09-24 00:25:21 - 中学数学试题等差数列跟等比数列的问题(高中数学)P1361)如果一个数列既是等差数列,又是等比数列,这个数列有什么特点?.
https://www.ouer.net/chuzhongshuxue/dcz6.html - 2022-08-12 22:20:06 - 中学数学试题2道数列的题目1.已知数列{An}的通项公式为An=2*3^n,Bn=A3n-2.求证,数列{Bn}是等比数列2.在数列{An}中,已知A1=1 An=(2An-1)/(An-1 +2) n>=2 Bn
https://www.ouer.net/chuzhongshuxue/sdu0.html - 2022-10-11 17:48:46 - 中学数学试题a,b,c既成等比数列,又成等差数列非常数列.a、b、c相等,且不为0
https://www.ouer.net/zati/hx0k.html - 2022-06-06 07:02:50 - 中学考试杂题数列{an}的前n项和为Sn=kan+1(k=/1)判断数列{an}是否为等比数列?.可得(an+1)/...数列{an}的前n项和为Sn=kan+1(k=/1)判断数列{an}是否为等比数列?.
https://www.ouer.net/chuzhongshuxue/dcnv.html - 2022-08-12 20:47:14 - 中学数学试题在数列{an}中,a n+1 =an²/(2*an - 5),若该数列既是等差数列,又是等比数列,则该数列的通项公式是.因为既是等差又是等比,所以是常数列且an≠0a n+1=a n相当于解x
https://www.ouer.net/chuzhongshuxue/wamr.html - 2022-11-02 07:46:03 - 中学数学试题已知数列{an}是等差数列,数列{bn}是等比数列,又a1=b1=1,a2b2=2,a3b3=7/4(1)求数列{an}及数列{bn}(2)设cn=anbn,求数列{cn}的前n项和Sn.1.设an=a1
https://www.ouer.net/chuzhongshuxue/k8an.html - 2022-07-27 19:35:13 - 中学数学试题已知数列{an}是等比数列,m是常数,且m不=0 ,bn=MAn 求证 :数列{bn}是等比数列.
https://www.ouer.net/shuxue/nfc82.html - 2020-12-27 03:05:43 - 数学作业答案常数列极限如果常数列An=0 那么这个数列有极限么?.常数列的极限就是那个常数哈.lim(n->无穷大)[A(n)] = lim(n->无穷大)[0] = 0.
https://www.ouer.net/chuzhongshuxue/c0h4.html - 2022-09-29 15:20:47 - 中学数学试题一个数列的求和公式是等差数列的求和公式,如何证明这是等差数列,(所证明的数列是无穷数列)即一个数列的求和公式为Sn=[n(A1+An)]/2,如何证明它是等差数列啊.2Sn=na1+nan2Sn-1=(
https://www.ouer.net/zati/hkr8.html - 2022-05-21 21:13:47 - 中学考试杂题无界数列是发散的数列吗.无界数列是指既没有上界也没有下界,一定是发散的,有可能是振荡的;数列只有两类,一类收敛到某一特定的数,另一类统称发散.故只要一个数列没有极限,我们就把它叫做发散数列.
https://www.ouer.net/chuzhongshuxue/dbev.html - 2022-08-11 09:32:05 - 中学数学试题数列{an}、{bn}中,an=3n-1,bn=4n+2,设数列{an}和数列{bn}的公共项组成数列{cn},求数列{cn}的前n项和..
https://www.ouer.net/chuzhongshuxue/h96r.html - 2022-06-19 06:48:12 - 中学数学试题已知数列{lgAn}是等差数列,求证{An}是等比数列.lgA(n+1)-lgAn=q (q为常数) lgA(n+1)/An=d q A(n+1)/An=10^q所以{An}是等比数列
https://www.ouer.net/chuzhongshuxue/us8s.html - 2022-10-20 15:25:39 - 中学数学试题证明数列 等比数列在数列{an}中,若a1=2,an+1=4an-3n+1,n属于N+(1)证明数列an-n是等比数列(2)求数列{an}的前n项和Sn.(1)a(n+1)=4an-3n+1a(n+1)
https://www.ouer.net/chuzhongshuxue/s860.html - 2022-10-16 18:28:44 - 中学数学试题数列】 (1 19:1:12)已知数列{an}是等差数列,数列{bn}是各项均为正数的等比数列,a1=b1=1,且a4+b4=15,a7+b7=77.(2)设数列{an*bn}的前n项和为Sn,求满足n
https://www.ouer.net/chuzhongshuxue/k3rm.html - 2022-07-21 15:37:56 - 中学数学试题通项公式和等比数列已知数列{an}满足a1=1an+1=2an +1(n∈N*)求证:数列{an +1}是等差数列求{an}数列的通项公式.应该是等比数列!
https://www.ouer.net/chuzhongshuxue/nvf2.html - 2022-03-16 09:24:01 - 中学数学试题数列an中,a1=3,an+an-1+2n-1=0(1)证明:数列an是等比数列,并求an通项公式;(2)求数列an的前n项和Sn数列an中,a1=3,an+an-1+2n-1=0(1)证明:数列an+
https://www.ouer.net/chuzhongshuxue/dnh9.html - 2022-08-03 17:29:04 - 中学数学试题数列证明题:设数列Xn有界,数列Yn的极限是0,证明数列﹛Xn乘Yn﹜的极限是0拜托各位大神. 存在正常数M,使得一切xn满足|xn|
https://www.ouer.net/shuxue/cxn3.html - 2020-11-08 21:56:14 - 数学作业答案什么事幂次数列和负幂次数列.
https://www.ouer.net/shuxue/n8kbs.html - 2021-10-11 14:34:26 - 数学作业答案等差数列概念的数列是不是等差数列?首项为0,公差为零..是等差数列
https://www.ouer.net/chuzhongshuxue/c55m.html - 2022-10-01 04:05:41 - 中学数学试题数列{an}满足a1=1,a2=2,an=1/2(an-1+an-2)(n=3,4...),数列{bn}满足bn=an+1-an1)求证数列{bn}是等比数列2)求数列{an}的通项公式.
https://www.ouer.net/shuxue/nzwkm.html - 2021-06-28 02:19:10 - 数学作业答案若数列{an}满足1an+1−1an=d(n∈N*,为常数),则称数列{an}为“调和数列”已知数列{a1xn}为“调和数列”,且x1+x2+…+x20=200,则x3x18的最大值是______..因为数列
https://www.ouer.net/chuzhongshuxue/88e.html - 2022-02-20 14:19:09 - 中学数学试题数列an是等差数列,数列bn是等比数列,又a1=b1=1,a2*b2=2,a3*b3=7/4 (1)求数列an及数列bn的通项公式(2)设Cn=an*bn求数列{cn}的前n项和Sn.a2b2=(a1+
https://www.ouer.net/chuzhongshuxue/05m5.html - 2022-11-22 18:27:36 - 中学数学试题如果数列an bn 是项数相同的两个等差数列,pq是常数,那么数列pan+qbn是等差数列吗?为什么?.
https://www.ouer.net/chuzhongshuxue/x76b.html - 2022-11-15 18:34:20 - 中学数学试题Sn为数列{an}的前n项和,且Sn=A qⁿ+B (q≠0) 证明该数列为等比数列 Sn为数列{an}的前n项和,且Sn=A qⁿ+B (q≠0) 证明该数列为等比数列an=A
https://www.ouer.net/chuzhongshuxue/dfw6.html - 2022-08-12 03:32:06 - 中学数学试题已知数列{lgan﹜是等差数列,求证﹛an﹜是等比数列..取数列{lg an }中的任意两项 lg an 和lg a(n-1),那么必定有lg an - lg a(n-1) = k = 常数所以有 lg
https://www.ouer.net/chuzhongshuxue/vw0b.html - 2022-10-28 22:02:16 - 中学数学试题,已知数列{an}的前n项和为Sn,若Sn=aq^2,(a≠0,q≠1,q为非零常数),那么该数列什么是数列?
https://www.ouer.net/chuzhongshuxue/fmcm.html - 2022-09-25 08:22:29 - 中学数学试题8.若2a=3,2b=6,2c=12,则a、b、c构成( )A、等差数列B、等比数列C、是等差数列也是等比数列D、不是等差数列也不是等比数列.a=1.5,b=3,c=6,故q=2,是等比数列,选B
https://www.ouer.net/chuzhongshuxue/fvfa.html - 2022-09-21 12:31:37 - 中学数学试题如何证明收敛数列必是有界数列?.
https://www.ouer.net/shuxue/kbs5.html - 2020-11-10 10:33:16 - 数学作业答案数列 (30 20:8:43)已知函数f(x)=2^x-2^(-x),数列{An}满足f(logAn/log2)=-2n(1)求数列{An}的通项公式(2)求证:数列{An}是递减数列.依题意得:2^(
https://www.ouer.net/chuzhongshuxue/r2a9.html - 2022-10-07 13:33:56 - 中学数学试题数列{an}为等差数列,an为正整数,其前n项和为Sn,数列{bn}为等比数列,且a1=3,b1=1,数列{ban}是公比为64的等比数列,b2S2=64.求an,bn..设等差数列{an}的公差为d,
https://www.ouer.net/chuzhongshuxue/k3re.html - 2022-07-21 15:34:58 - 中学数学试题数列{an}中,a3=2,a5=1,若数列{1an+1}是等差数列,则a11= ___ ..设数列 {1an+1}的公差为d∵数列{an}中,a3=2,a5=1,如果数列 {1an+1}是等差数列∴1a5
https://www.ouer.net/chuzhongshuxue/xrm5.html - 2022-11-12 05:17:12 - 中学数学试题