已知lim(3n+4)an=15,求lim(n·an)
数列极限(已知lim[(2n-1)an]=2,求lim n*an)
1.对于数列{an},已知lim n→∞ n*an=5,求lim n→∞(3n+7)an的值
极限的运算法则!已知 lim(2n+1)an=3,lim(nan)=
数列极限的运算lim an/(an+1) =2 求lim 2anlim (2n+1)*an=3 求lim n*an
lim n趋于无穷 ,an+1/an=q.求lim an=?
若lim[(2n-1)an]=1 求lim(n*an)的值
已知lim n→无穷 (an^2+bn+5)/(3n-2)=2,求a,b的值
已知数列an的前n项和Sn=(n^2+n)*3^n (1)求lim(n→∞)an/Sn (2).
高二的极限运算题 lim(2an+4bn)=8,lim(6an-bn)=1,求lim(3an+bn)的值 n趋向于无穷大
已知lim[(an^2+5n-2)/(3n+1)-n]=b,求a,b的值
lim (n→∞) (n^2/(an+b)-n^3/(2n^2-1))=1/4 求a,b
已知数列{an}满足lim[(2n-1)an]=2,则lim(n+2)an=