求[ n^2(k/n-1/(n+1)-1/(n+2)- .-1/(k+1)] 的极限的值
求[ n^2(k/n-1/(n+1)-1/(n+2)- .-1/(k+1)] 的极限的值
求极限k^2/(n^3+k^3) n趋于无穷,k=1到n
求极限limn→∞(n^2)*(k/n -1/(n+1)-1/(n+2)...-1/(n+k)
求极限lim(n→∞)∑(k=1,n)k/(n^2+n+k)详细过程
(1-1/n)(1-2/n)…(1-k/n)的极限
数列极限 lim[kn^2/n-n^2/(n+1)-n^2/(n+2)-...-n^2/(n+k)]
求limn^2(k/n-1/n+1-1/n+2-…-1/n+k)(其中k为与n无关的正整数)n趋向无穷
求n/2(n+1)的极限
求lim(n趋向无穷)∑(k=1,2···,n)k/((n+k)*(n+k+1))的值
求极限lim(n→∞)∑(k=1→n)k^3/(n^3+n^2+n+k^3)
用级数求(n/2n+1)^n的极限
求高手求极限 要有过程lim(n→∞)〖1/(n^2+1)+2/(n^2+2)+3/(n^2+3)+~+k/(n^2+k