|0……………………n|
组合:C(n,0)+C(n,1)+……+C(n,n)=n^2
(1/(n^2 n 1 ) 2/(n^2 n 2) 3/(n^2 n 3) ……n/(n^2 n n)) 当N越于无穷大
证明C(0,n)^2+C(1,n)^2+……+C(n,n)^2=C(n,2n)
n是自然数,0≤n≤101,则| n-1|+|n-2|+|n-3|+…+|n-100|的最小值,
求极限 lim n[1/(n^2+1)+1/(n^2+2^2)+……+1/(n^n+n^n)] (n趋向于无穷大,n^n
证明不等式:(1/n)的n次方+(2/n)的n次方+……+(n/n)的n次方
数学不等式证明题n=1,2,……证明:(1/n)^n+(1/2)^n+……+(n/n)^n第二个是(2/n)^n
VB编程n!+(n+1)!+(n+2)!+(n+3)!+……+(n+m)!
证明1/(n+1)+1/(n+2)+1/(n+3)+……+1/(n+n)
lim1/n(sin1/n+……+sin(n-1)/n)=?n趋向无穷大
求极限Xn=n/(n^2+1)+n/(n^2+2)+n/(n^2+3)+……+n/(n^2+n),
[n+(n+1)+(n+2)+……+1]化简