a1=1,a(n+1)=3an+2,求an.
a(n+1)=2an/3an+4,a1=1/4,求an
数列{an},a1=1,an+1=2an-n^2+3n,求{an}.
设数列{an}中,a1=2,a(n+1)=an+n+1,求an
数列A(n+1)=2An+2n-3,A1=2,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=?
数列an,a1=1,a(n+1)=an+2n+3,求an用累加法
在数列an中,a1=1,且满足a(n+1)=3an +2n,求an
已知数列an满足a(n+1)=an+3n+2,且a1=2,求an
已知等差数列{an}满足a(n+1)=an+3n+2,且a1=2,求an.
已知数列an,a1=2,且a(n+1)=2an+3n,求an
若在数列{An}中,a1=3,A(n+1)=An+2n,求An通项公式?