求lim[ x^(n+1)-(n+1)x+n]/(x-1)^2 x-->1
求极限lim [x^(n+1)-(n+1)x+n]/(x-1)^2 x趋于1
求极限lim(x→∞)(1/n+2/n+3/n..+n/n)
求极限,lim(x->0) (1-2sinx)^(3/x)lim(n->+∞) (n!-4^n) / (6+ln(n)+
lim[n/(n*n+1*1)+n/(n*n+2*2)+...+n/(n*n+n*n)],当x趋向无穷大时,怎么求极限,
求极限lim(-2)^n+3^n/(-2)^[n+1]+3^[n+1] (x→∞)
求极限:lim(x→无穷)(2^n-7^n)/(2^n+7^n-1)=?
求极限 lim(n→∞)[(1+x)/(1+x^2n)] |x|>1
lim(x->0)[cosx-1+1/2 *(x^2)]/x^n=a 求 n ,a
f(x)=lim (1+X)/(1+x^2n) n->无穷 求间断点
求f(x)=lim(n→∞)[x^(n+2)-x^n]/[x^n+x^(-n-1)]的间断点集齐类型
lim x->+无穷 x/[x^n+1-(x-1)^n+1]=k,n为正整数,求n和k
求极限 lim x-无穷 sin(n+1)/(n+a)