limn→∞(1+2+…+nn+2−n2)
limn→∞(1+2+…+nn+2−n2)
请问如何证明lim(n→∞)[n/(n2+n)+n/(n2+2n)+…+n/(n2+nn)]=1,
求极限limn→∞(n-1)^2/(n+1)
求极限:limn→∞(n-1)^2/(n+1)
已知limn→∞an2+cnbn2+c=2,limn→∞bn+ccn+a=3,则limn→∞an2+bn+ccn2+an
求下列数列极限(1)limn→∞2n^3-n+1/n^3+2n^2;(2)limn→∞(-2)^n+3^n/(-2)^n
limn→∞[11•4+14•7+17•10+…+1(3n−2)(3n+1)]
limn→∞,n/(√n^2+1)+(√n^2-1)求极限
limn→∞n√(1+1/n)(1+2/n)...(1+n/n)等于多少?
limn→∞ 1/n^3(1²+2²+...+n²)
limn→∞
|a|<1,求limn→∞[(1+a)(1+a^2)(1+a^4)……(1+a^(2^n))]