已知数列{an}满足a1=1,an=3^n-1+an-1,证明an=3^n-1/2
已知数列{An}满足:A1=3 ,An+1=(3An-2)/An,n属于N*.1)证明:数列{(An--1)/(An--
已知数列{an}满足:a1=3,an+1=(3an-2)/an ,n∈N*.(Ⅰ)证明数列{(an-1)/an-2
已知数列{an}满足,a1=2,a(n+1)=3根号an,求通项an
数列{an}满足a1=1,且an=an-1+3n-2,求an
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
已知数列{an}满足a1=1,an=(an-1)/3an-1+1,(n>=2,n属于N*),求数列{an}的通项公式
已知数列{An}满足A1=0.5,A1+A2+…+An=n^2An(n∈N*),试用数学归纳法证明:An=1/n(n+1
已知数列{an}满足a1=1,a2=2,an+2=(an+an+1)/2,n∈N*.令bn=an+1-an,证明{bn}
已知数列{an}满足a1=1,an=3^n-1+an-1,证明an=3^n-1/2
已知数列(an)满足an+1=2an+3×2∧n,a1=2求an
已知数列an满足:an+1-2an=2^n+1,且a1=2 (1)证明{an/2^n}是等差数列 (2)求数列an的
已知数列An满足A1=1,An=3^(n-1)+A(n-1)(n=>2).(1)求A2,A3;(2)证明An(3^n-1