已知数列{an}满足a(n+1)=an+3n+2,且a1=2,求an=?
已知数列{an}满足a(n+1)=an+3n+2,且a1=2,求an=?
已知数列an满足a(n+1)=an+3n+2,且a1=2,求an
数列{an}满足a1=1,且an=an-1+3n-2,求an
在数列an中,a1=1,且满足a(n+1)=3an +2n,求an
已知数列{an}满足:a1=1,且an-a(n-1)=2n.求a2,a3,a4.求数列{an}通项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=2,a(n+1)=3根号an,求通项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
已知数列{an}满足a1=33,a(n+1)-an=2n,求an/n的最小值
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,a1=2,且a(n+1)=2an+3n,求an
已知数列an满足an=1+2+...+n,且1/a1+1/a2+...+1/an