计算：lim(2n-1)/(n+3),请写出计算过程.

lim(n→∞) (3^n-4^n)/(3^n+2×4^n),请计算, 计算：lim(2n-1)/(n+3),请写出计算过程. 计算lim(n→∞)(1^n+2^n+3^n)^(1/n) lim [2^(n+2)+3^(n+3)] / [3^n-2^(n+1)] 如何计算? 计算：lim[(1/n^2+1)+(3/n^2+1)+...+(2000/n^2+1)]=_____ 数列的极限计算lim（3n²+4n-2）/(2n+1)² lim(n+3)(4-n)/(n-1)(3-2n) lim(n^3+n)/(n^4-3n^2+1) lim[(n+3)/(n+1))]^(n-2) 【n无穷大】 lim(2^n+3^n)^1 (n趋向无穷) 计算lim((n方-3/n+2)-n))lim是无限集, 计算：lim{3n^3-1/(n+1)^3} 计算lim(n^3+9)^(1/3) n->∞ 计算lim(3n-1/n+3)=? 计算1：lim(n→∞) [5^(n+1)+3^(n+1)] /[5^n+3^n]计算2：lim(n→∞) [3^(n+1)-2^n] /[3^n+2^(n+1)]计算3；lim(n→∞) [2(n^2）+1]/[(n^3)+1] 求1.lim(3n-(3n^2+2n)/(n-1)) 2.lim(8+1/(n+1)) 3.lim根号n(根号(n+1)-根号(n-3)) lim n->无穷大(2^n-1)/(3^n+1) lim根号n^2+n+1/3n-2