数列{an},a1=8,a4=2,且满足an+2(n+2下)=2an+1(n+1下)-an(n下).
数列{an}中,a1=8,a4=2且满足an+2=2an+1-an( n∈N*)
已知数列{an}满足:a1=1,且an-a(n-1)=2n.求a2,a3,a4.求数列{an}通项an
数列{an}满足a1=1,且an=an-1+3n-2,求an
在数列an中,a1=1,且满足a(n+1)=3an +2n,求an
设数列{an}满足a1=2,an+1=an+1/an(n=1,2,3.),证明:an>根号下(2n+1).急用
设数列{an}满足an+1/an=n+2/n+1,且a1=2
已知数列{an}中a1=6,且an-an-1=(an-1/n)+n+1(n属于N*,n≥2),求an
已知数列{an}满足:a1=3,an+1=(3an-2)/an ,n∈N*.(Ⅰ)证明数列{(an-1)/an-2
已知数列{An}满足:A1=3 ,An+1=(3An-2)/An,n属于N*.1)证明:数列{(An--1)/(An--
已知数列{an}满足:a1=1,且an-an-1=2n,求(1)a2,a3,a4.(2)求数列{an}的通项an
数列{an}满足a1=1 an+1=2n+1an/an+2n
已知数列{an}满足a1=33,a(n+1)-an=2n,求an/n的最小值