求lim(n→∞)[(1^3+4^3+7^3+……+(3n-2)^3]/{[1+4+7+……+(3n-2)]^2}
lim(1/n^2+4/n^2+7/n^2+…+3n-1/n^2)
求极限lim(1/2n+3/4n+……+(2^n-1)/(2^n*n))
求lim n→∞ (1+2/n)^n+3
lim(x→∞)1+2+3+…+n/(n+2)(n+4)=?
求极限lim [ 2^(n+1)+3^(n+1)]/2^n+3^n (n→∞)
求lim(n→∞)(1/n+2)*[1+2+3+……+(n-1)-(n^2)/2]
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)
求极限 lim(n->无穷)[(3n^2-2)/(3n^2+4)]^[n(n+1)]
求lim(n+1)(n+2)(n+3)/(n^4+n^2+1)
一道极限题,lim[n^2(2n+1)]/(n^3+n+4)n->∞
求极限,lim(x->0) (1-2sinx)^(3/x)lim(n->+∞) (n!-4^n) / (6+ln(n)+