问道数学题.正数数列{an}和{bn}满足:对任意自然数n,an,bn,a(n+1)成等差数列,bn.a(n+1)成等比
问道数学题.正数数列{an}和{bn}满足:对任意自然数n,an,bn,a(n+1)成等差数列,bn.a(n+1)成等比
高一等比数列证明题,正数列{an}和{bn}满足,对于任意自然数n,an,bn,a(n+1)成等差数列,bn,a(n+1
正数列{an}和{bn}满足对任意自然数n,an,bn,an+1成等差数列,bn,an+1,bn+1成等比数列
已知正项数列{an},{bn}满足:对任意正整数n,都有an,bn,a(n+1)成等差数列,bn,a(n+1),b(n+
数列an,bn各项均为正数,对任意n,an,bn,an+1成等差数列,bn,an+1,bn+1成等比数列证数列根号BN成
有两个正数数列an,bn,对任意正整数n,有an,bn,an+1成等比数列,bn,an+1,bn+1成等差数列,若a1=
已知正数列{an}和{bn}满足:对任意n(n属于N*),an,bn,an+1成等差数列且an+1=根号下b
已知正项数列{an}{bn}满足,对任意正整数n,都有an,bn,an+1成等差数列,bn,an+1,bn+1成等比数列
正整数列{an},{bn}满足对任意正整数n,an、bn、an+1成等差数列,bn、an+1、bn+1成等比数列,证明:
数学数列题、急数学题 在数列{An}.{Bn}中已知A(n+1)=2An+K Bn=A(n+1)-An求证{Bn}为等比
{a} 、{b} 都是各项为正的数列,对任意的正整数n,都有an,bn^2,an+1 成等差数列,bn^2,an+1,b
数列an,bn各项均为正数,a1=1,b1=2,a2=3,对任意n,an,bn,an+1成等差数列,bn,an+1,bn