求极限lim(n+1/n+3)^n

求极限lim 2/(3^n-1) 求极限lim [ 2^(n+1)+3^(n+1)]/2^n+3^n (n→∞) 求极限 lim(n->无穷)[(3n^2-2)/(3n^2+4)]^[n(n+1)] lim n →∞ (1^n+3^n+2^n)^1/n,求数列极限 求极限lim(x→∞)（1/n+2/n+3/n..+n/n） lim π^n/2^n+3^n.求极限 lim π^n/(2^n+3^n).求极限 求极限n~∞,lim(n+1)/2n 求极限：lim(n→∞)[（3n+1 ）/（3n+2）]^(n+1) 求极限lim (3^n+1-2^n+1)/(3^n+2^n) 求极限lim(-2)^n+3^n/(-2)^[n+1]+3^[n+1] (x→∞) 求极限：lim((2n∧2-3n+1)/n+1)×sin n趋于无穷