lim(n→∞) (3^n-4^n)/(3^n+2×4^n),请计算,

lim(n→∞) (3^n-4^n)/(3^n+2×4^n),请计算, lim(n→∞) 1/(n+1)-2/(n+1)+3/(n+1)-4/(n+1)+...+[(2n-1)/(n+1)]-[(2n)/(n-1)]求极限 用数列极限证明lim(n→∞)(n^-2)/(n^+n+1)=1中证明如下:lim(n→∞)3n+1/5n-4 lim (n!+(n-1)!+(n-2)!+(N-3)!+⋯..+2!+1)/n!其中n→∞ lim(n→∞) 2的2n次方-8/4n次方+3n次方 lim(n→∞)3n^2+5n-7/4-n^2的值是 求当n→∞,Lim(1+2+3+4+……+(n-1)+n)/n 求lim n→∞ (1+2/n)^n+3 lim(n→∞)[1-(2n/n+3)] lim(n→∞)(2n-1/n+3) lim((5^n-4^(n-1))/((5^(n+1)+3^(n+2)) n→∞时的极限是多少? 高数题:lim(n→∞)(1+2∧n+3∧n+4∧n)∧ 1/n=? 求lim(n→∞)时[5^n-4^(n-1)]/5^(n+1)+3^(n+2) lim（n→∞）(3n^3-2n+1)/n^3+n^2 快 lim(n→∞)[1/(3n+1)+1/(3n+2)+~1/(3n+n)] 求极限lim [ 2^(n+1)+3^(n+1)]/2^n+3^n (n→∞) 求极限lim(x→∞)（1/n+2/n+3/n..+n/n） 计算lim(n→∞)(1^n+2^n+3^n)^(1/n)