数列A1=1/3,An+1=An+An²/n²求证An>1/2+1/4n
数列A1=1/3,An+1=An+An²/n²求证An>1/2+1/4n
数列{an},a1=1,an+1=2an-n^2+3n,求{an}.
数列{an}满足a1=1,且an=an-1+3n-2,求an
在数列an中,a1=2 an+1=an+3n则an=
已知数列{An}满足A1=1,An+1=2An+2^n.求证数列An/2是等差数列
在数列An中 A1=3 2An+1=(1+1/n)²An+2(n-1/n)
数列{an}满足a1=1 an+1=2n+1an/an+2n
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}中,a1=2,an+1=an²+2an(n∈N+)
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=1/2,Sn=n²×an,求an
在数列{an}中,a1=2,an+1=4an-3n+1