设数列an满足 a1=5/6,且an=1/3a（n-1）+1/3 求证 数列an-1/2为等比数列

设数列{an},a1=3,a(n+1)=3an -2 (1)求证:数列{an-1}为等比数列 已知数列{an}满足a1=1,a(n+1)=3an+2(n属于N) 1.求证数列{an+1}是等比数列 2.求{an}的 已知数列an满足an+1=3an+1,且a1=1/2,求证:数列{an+1/2}为等比数列 设数列{an},a1=3,前n项a(n+1)=3a-2 求证数列{(an)-1}为等比数列 数列{an}满足 a1=2,a2=5,an+2=3an+1-2an.(1)求证:数列{an+1-an}是等比数列; (2 已知数列{An},Sn是其前n项和,且满足3An=2Sn+n,n为正整数,求证数列{An+1/2}为等比数列 数列｛an｝满足a1=1,且an=an-1+3n-2,求an 已知数列{an}满足a1=1,an+1=2an+1 1）求证：数列{an+1}为等比数列； 2) 求{an}的通项an 已知数列{an}满足a1=1,a(n+1)=2an+1.求证（1）数列a(n+1)是等比数列；（2）求an 设数列｛an｝满足an+1/an=n+2/n+1,且a1＝2 高中数列{An}前n项和Sn且A1=0 ,S(n+1)=4An+2.求证{A（n+1）-2An}为等比数列. 设数列An的前n项和为Sn,已知a1=1,An+1=Sn+3n+1求证数列｛An+3}是等比数列