已知lim(3an+ 4bn)=8,lim(6an-bn)=1,则lim(2an +bn)的值是多少?

已知lim(3an+4bn)=8,lim(6an-bn)=1,则lim(3an+bn)的值是多少 已知lim(3An+4Bn)=8,lim(6An-Bn)=1,求lim(3An+Bn)的值 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 lim(3an+4bn)=8 lim(6an-bn)=1 求lim(3an+bn) 要设3an+4bn=m 6an-bn 等差数列{an},{bn}的前n项和分别为An,Bn,切An/Bn=2n/3n+1,求lim(n→∞)an/bn 关于数列的极限问题若极限lim(5an+4bn)=7,极限lim(7an-2bn)=5,则极限lim(6an+bn)=? 数列的极限高中lim(2bn^2+4n+an^2-2n+1)/(bn+2)=1 lim(n->无穷)[(3n^2+cn+1)/(an^2+bn)-4n]=5 已知lim n→无穷 （an^2+bn+5）/(3n-2)=2,求a,b的值 等差数列an,bn的前n项和分别为Sn,若Sn/Tn=2n/(3n+1),求lim an/bn 已知{an}{bn}都是公差不为0的等差数列.且lim(n趋近无穷)an/bn=2.求lim(n趋近无穷)(a1+a2+ 数学题 lim（an^2+bn-100)/(3n-1) =2 求ab的值大神们帮帮忙