求lim[ x^(n+1)-(n+1)x+n]/(x-1)^2 x-->1

求极限Lim（(n-x)/(n+2))^(n+1) f(X+1)=lim(n-无穷）（n+x)/n-2)n 求f(x) 求极限lim [x^(n+1)-(n+1)x+n]/(x-1)^2 x趋于1 求lim[ x^(n+1)-(n+1)x+n]/(x-1)^2 x-->1 求lim(x->&无穷)sinn/n,求lim(x->无穷)sin(1/n) 求极限lim(x→∞)（1/n+2/n+3/n..+n/n） lim(n/(n^2+1)+...+n/(n^2+n))x趋向于无穷 求解答过程~ lim x^n=?(x->1+) lim x^n=?(x->1-)n->无穷 n-> 无穷 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)=? lim x->+无穷 x/[x^n+1-(x-1)^n+1]=k,n为正整数,求n和k 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, lim(cos1/n)^n^2 n->∞lim (1+|x|)^1/x x->0 求n趋近于无穷大时 f(x)=lim (1/n)*ln（e^n+x^n) (x>0) lim[n→∞] (x^n+1)^(1/n) 求极限:x趋向于1,lim(m/1-x^m—n/1-x^n) 求极限 lim(x→1) (1-x^n)/(1-x) (n→无穷) f(x)=lim (1+X)/(1+x^2n) n->无穷 求间断点