在数列an中,a1=1,且满足a(n+1)=3an +2n,求an
在数列an中,a1=1,且满足a(n+1)=3an +2n,求an
数列{an}满足a1=1,且an=an-1+3n-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
在数列an中,a1=1,且an=(n/(n-1))a(n-1)+2n*3的(n-2)次方 求an通项公式
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
求数列通项1.已知数列{an}满足:a(n+1)方=an方+4且a1=1,an>0,求an2.在数列{an}中,a1=2
已知数列{an}满足a1=33,a(n+1)-an=2n,求an/n的最小值
设数列{an}中,a1=1且(2n+1)an=(2n-3)a(n-1),(n大于等于2),求{an},sn
已知数列{an}中a1=6,且an-an-1=(an-1/n)+n+1(n属于N*,n≥2),求an
已知数列an,a1=2,且a(n+1)=2an+3n,求an
已知数列{an}中,a1=3,且满足a(n+1)-3an=2x3^n(n属于N*)