lim(n趋向于正无穷)(x^n-1)/(x^n+1)=?,

问题描述:

lim(n趋向于正无穷)(x^n-1)/(x^n+1)=?,

1.|x|>1,即x1
lim(n趋向于正无穷)(x^n-1)/(x^n+1)
=lim(n趋向于正无穷)(1-1/x^n)/(1-1/x^n)
=1
2.-1