An>0,A1=2,当n>=2,An+A(n-1)=n/(An-A(n-1))+2,求An通项
An>0,A1=2,当n>=2,An+A(n-1)=n/(An-A(n-1))+2,求An通项
设数列{an}中,a1=2,a(n+1)=an+n+1,求an
A1=1,A(n+1)/An=(n+2)/n,求An?
已知数列 an 中,a1=1,3an*a(n-1)+an-a(n-1)=0(n大于等于2) 求an通项
已知数列an中满足a1=1且当n.=2时,2an*a*(n-1)+an-a(n-1)=0,求通项公式an
an=0,an+a(n+1)=2^n,求an通项
数列{an}中,a1=2,a(n+1)=an(n+1)/n,求{an}通项式
已知数列{an}满足a1=33,a(n+1)-an=2n,求an/n的最小值
数列{an},a1=1,an+1=2an-n^2+3n,求{an}.
已知数列{an}中,a1=1,a(n+1)>an,且[a(n+1)-an]^2-2[a(n+1)+an]+1=0,则an
a(n+1)=2an/3an+4,a1=1/4,求an
数列A(n+1)=2An+2n-3,A1=2,求An