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】 (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,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(高二数学)已知数列{an}是首项a1=a,公差为2的等差数列;数列{bn}满足2bn=(n+1)an已知数列{an}是首项a1=a,公差为2的等差数列;数列{bn}满足2bn=(n+1)an(1)若a1
https://www.ouer.net/chuzhongshuxue/z26u.html - 2022-05-03 05:31:12 - 中学数学试题数列an,a1=2,an=2a(n-1)+2n次(n≥2)(1)求证数列an/2n是等差数列(2)求数列an的前n项和Sn(3)若bn=2n-1/an,求证数列bn为递减数列.a1+2a2+3a3+…+
https://www.ouer.net/chuzhongshuxue/dnh0.html - 2022-08-03 17:04:56 - 中学数学试题若数列{an}满足a(n加1)的平方减an的平方等于d,其中d为常数,则称数列{an}为等方差数列已知等方差数列{an}满足an>0、a1=1、a5=3(1)求数列{an}的通项公式(2)求数列{an的平方
https://www.ouer.net/chuzhongshuxue/89a.html - 2022-02-20 14:24:14 - 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 - 中学数学试题数列A有界,数列趋向0,怎么证明他们的乘积也趋向0数列A有界,数列B趋向0,怎么证明他们的乘积也趋向0,.有界并且趋向0那lim an=0所以lim a1*a2*...an = 0
https://www.ouer.net/chuzhongshuxue/dbes.html - 2022-08-11 09:27:05 - 中学数学试题已知数列{An}是各项均为正数的等比数列,求证{根号下An}也是等比数列.证明:由题臆数列{An}是正项等比数列,可设公比为q(q>0).根号下An+1/An =根号下q,
https://www.ouer.net/chuzhongshuxue/w41d.html - 2022-11-07 10:02:50 - 中学数学试题已知数列{an}的前n项和Sn=32n-n²,求证数列{an}是等差数列已知数列{an}的前n项和Sn=32n-n²,(1)求证数列{an}是等差数列(2)设bn=|an|,求数列{
https://www.ouer.net/chuzhongshuxue/h1ur.html - 2022-06-07 09:13:12 - 中学数学试题数列{an}是公差为d的等差数列,用定义法证明数列{a(4n-3)}是等差数列.由题an递推公式为an=a1+(n-1)d把n用4n-3代替有递推公式a(4n-3)=a1+(n-1)*4d则a(4n-3
https://www.ouer.net/chuzhongshuxue/duhx.html - 2022-08-16 22:17:21 - 中学数学试题已知数列{an}的前n项和Sn=an−1(a≠0),那么数列{an}( )A. 一定是等比数列B. 一定是等差数列C. 是等差数列或等比数列D.
https://www.ouer.net/chuzhongshuxue/dchr.html - 2022-08-12 23:00:02 - 中学数学试题