19.一直数列An,A1=m,A(n+1)=2An+3^(n+1).
19.一直数列An,A1=m,A(n+1)=2An+3^(n+1).
一直数列{An}满足A1=1/2,A1+A2+…+An=n^2An
数列{an},a1=1,a(n+1)=2an-n^2+3n
数列{an},a1=1,an+1=2an-n^2+3n,求{an}.
数列{an},a1=1/2,a(n+1)=3an/(an)+3,
已知数列{an}满足,a1=2,a(n+1)=3根号an,求通项an
数列A(n+1)=2An+2n-3,A1=2,求An
设数列{an}中,a1=2,a(n+1)=an+n+1,求an
.感激= 已知数列{an}中,a1=3,an=(2^n)*a(n-1) (n》2,n∈N*)求数列an通项公式
数列{An}中,a1=2,a (n+1)=4an-3n+1,n为N*
已知数列{an}满足a1=1,2a(n+1)an+3a(n+1)+an+2=0.
设数列{an},a1=3,an+1=3an-2(n∈N*)