lim(n→∞)(1/(n^2+1)+4/(n^2+1)+7/(n^2+1)+3n-2/(n^2+1)=

lim[(n+3)/(n+1))]^(n-2) 【n无穷大】 求lim n→∞ (1+2/n)^n+3 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→∞) 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(1/n^2+4/n^2+7/n^2+…+3n-1/n^2) 一道极限题,lim[n^2(2n+1)]/(n^3+n+4)n->∞ 证明不等式：(1/n)^n+(2/n)^n+(3/n)^n+.+(n/n)^n 求极限 lim(n→∞)[根号(n^2+4n+5)-(n-1)] = lim（n→∞) （(2n!/n!*n)^1/n的极限用定积分求 求lim(n+1)(n+2)(n+3)/(n^4+n^2+1)