求极限lim_{n->无穷} n^2/(2n^2+1) = ( )

求极限lim_{n->无穷} n^2/(2n^2+1) = ( ) 求极限Lim x^2n的极限 （n趋向无穷）?n要分正无穷和负无穷讨论吗? 求极限 lim（ √N^2+N ）－N X趋向于无穷 求极限 求极限 n趋向无穷 2^n+1 + 3^n+1/2^n+3^n (5^n+(-2)^n)/(5^(n+1)+(-2)^(n+1))当n趋近无穷,求极限. 高数求极限 2^n*n!(/n^n) n趋于无穷?高数求极限 2^n*n!/(n^n) n趋于无穷 求极限 lim(n无穷)n【(根号（n^2+1)-根号（n^2-1)】 求极限：lim(x→无穷)(2^n-7^n)/(2^n+7^n-1)=? （1-n^4）/(n^3+2n^2+1) 求极限n趋于正无穷。 求lim(n->无穷)(3n+5)/(n^2+n+4)^1/2的极限 求极限：lim((2n∧2-3n+1)/n+1)×sin n趋于无穷 求极限 lim n[ e^2- (1+1/n)^2n] n->无穷 lim[(根号下n^2+n)-n],n趋向于无穷,求函数的极限 求极限 lim(n+1/n+2)^n.n趋向无穷 求极限 n趋向于无穷 lim（(根号下n^2+1)/(n+1)）^n 求极限lim(n趋向于无穷）(n+1)(根号下(n^2+1)-n) 大一求极限题求解[(a^1/n+b^1/n)/2]^n,n趋于无穷 n趋向无穷,求极限(3n+1)/(3n-1)的2n+3次方