已知正数列{an}和{bn}满足:对任意n(n属于N*),an,bn,a(n+1)成等差数列且a(n+1)=根号下bn
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
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
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
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
已知数列{an}是等差数列,且bn=an+a(n-1),求证bn也是等差数列
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:
已知正项数列{an},{bn}满足:a1=3,a2=6,{bn}是等差数列,且对任意正整数n,都有bn,根号an,bn+
已知数列an是等差数列,且bn=an+a(n+1).求证数列bn是等差数列.
已知数列{An}是等差数列,且Bn=An+A(n+1).求证数列{Bn}是等差数列
已知数列{an}和{bn}满足关系式:bn=a1+a2+a3+...+an/n(n属于N*) (1)若bn=n^2,求数