在等差数列｛an｝中,a1=1,a7=4,数列｛bn｝是等比数列.若b2=a3,b3=1/a2,则满足不等式bn＜1/a

在等差数列｛an｝中,a1=1,a7=4,数列｛bn｝是等比数列.若b2=a3,b3=1/a2,则满足不等式bn＜1/a 设数列{an}、{bn}满足：a1=b1=6，a2=b2=4，a3=b3=3，且数列{an+1-an}是等差数列，{bn 已知等差数列{an}中,a1=1,a7=4,数列{bn}是等比数列,b1=6,b2=a3. 设数列{An}{Bn} 满足A1=B1= A2=B2=6 A3=B3=5且{An+1-An}是等差数列{Bn+1-Bn} 已知两个等比数列{an},{bn}满足a1=a(a>0),b1-a1=1,b2-a2=2,b3-a3=3,若数列{an} 设数列{an}和{bn}满足a1=b1=6,a2=b2=4,a3=b3=3 ,且数列{an+1-an}是等差数列 数列an是等差数列,bn是等比数列,满足b1=a1^2,b2=a2^2,b3=a3^2,求数列bn公比q 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 设数列an是等差数列,bn为等比数列,若a1=b1=1,a2+a4=b3,b2×b4=a3,求数列an,bn的通项公式 an是等差数列,a1+a2+a3=15,数列bn是等比数列,b1b2b3=27.若a1+b1,a2+b2,a3+b3是正 设数列{an}和{bn}满足a1=b1=6,a2=b2=4,a3=b3=3 ,且数列{an+1-an}是等差数列,{bn 在公差不为零的等差数列an和等比数列bn中,已知a1=1,a1=b1,a2=b2,a3=b3,求