数列{an}满足a1=1/2,an=(2n-3/2n)an-1,求证：ak

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 数列｛an｝满足a1=1,且an=an-1+3n-2,求an 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 数列{an}满足a1=1 an+1=2n+1an/an+2n 给定数列{An}满足An=[lg(n+2)]/[lg(n+1)] n∈N*,定义乘积A1*A2*~~~~*Ak为整数时的 已知数列{an}满足an+1=2an+3.5^n,a1=6.求an 已知数列{an}满足an+an+1=2n+1（n∈N*），求证：数列{an}为等差数列的充要条件是a1=1． 已知数列{an}满足a1=3 an*a(n-1)=2a(n-1)-1,求证数列{1/(an-1)}是等差数列,并求出数列 设数列an满足a1=2 an+1-an=3-2^2n-1 已知数列{an}满足,a1=2,a(n+1)=3根号an,求通项an 数列A1=1/3,An+1=An+An²/n²求证An>1/2+1/4n 数列{an}满足a1=1,an=3n+2an-1(n≥2)求an