lim x->+无穷 x/[x^n+1-(x-1)^n+1]=k,n为正整数,求n和k

lim x^n=?(x->1+) lim x^n=?(x->1-)n->无穷 n-> 无穷 lim （n趋向无穷）（x/1+x)x次方 求lim(x->&无穷)sinn/n,求lim(x->无穷)sin(1/n) f(X+1)=lim(n-无穷）（n+x)/n-2)n 求f(x) 判断极限是否存在lim [n+(-1)^n]/n n趋向于无穷 lim |x|/x x趋向于0 lim(x~无穷)xsin1/x-1/xsinx 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 f(x)=lim (1+X)/(1+x^2n) n->无穷 求间断点 lim(n趋向于正无穷)(x^n-1)/(x^n+1)=?, 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) 正无穷 极限lim x趋进于无穷ln（n/(n+1)）为什么是无穷小量 求lim(n趋向于正无穷)(x^n)/n! lim(x+1/x+2)^x=?x趋于无穷 lim(x趋于无穷)(x/1+x)^(x+2)=? lim(n/(n^2+1)+...+n/(n^2+n))x趋向于无穷 求解答过程~ lim【2-ln(n+1)/x】^(1/x)的极限怎么算（x→无穷）