lim[(2n^2+5n-1)/(3n^2-2n^2)+(3+5n)/(3n-1)]

lim[(n+3)/(n+1))]^(n-2) 【n无穷大】 lim(3^2n+5^n)/(1+9^n) lim 9^n+4^n+2/5^n-3^2n-1 n趋于无穷大时 证明不等式：(1/n)^n+(2/n)^n+(3/n)^n+.+(n/n)^n lim根号n^2+n+1/3n-2 lim n->无穷大(2^n-1)/(3^n+1) 求lim n→∞ (1+2/n)^n+3 lim n趋于无穷大(1/n^2+3/n^2+.+2n-1/n^2 lim(1/n^2+4/n^2+7/n^2+…+3n-1/n^2) 求极限 lim(n->无穷)[(3n^2-2)/(3n^2+4)]^[n(n+1)] 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→∞)