已知数列{an},a1=2,an+1=2an+2,那么an等于多少?
已知数列{an}满足a1=2,an+1-an=an+1*an,那么a31等于
已知数列{an}满足a1=2,an+1=2an/an+2,则an等于多少
已知数列{an},an=2^n,则1/a1+1/a2+...+1/an等于多少?
若数列{An}满足An+1=An^2,则称数列{An}为“平方递推数列”,已知数列{an}中,a1=9,点(an,an+
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
已知数列{an}中,a1=1,满足an+1=an+2n,n属于N*,则an等于
数列an中,a1=3,an+1=an/2an+1,则an=?
已知数列{an}满足a1=1,a2=3,an+2=3an+1-2an求an
已知数列an满足a1=1,1/an+1=根号1/an^2+2,an>0,求an
已知数列{an}中,a1=1,an+1=2an+1,令bn=an+1-an.
已知数列an中,a1=1,an+1=2an/an+2(n属于正整数),求通项公式an?
已知数列an满足 a1=1/2,an+1=3an/an+3求证1/an为等差数列