lim(x→-∞)x-2/(x+1)^2

问题描述:

lim(x→-∞)x-2/(x+1)^2
求详解!x趋向负无穷!

lim(x→-∞)x-2/(x+1)^2 (分子分母同除以x平方)
=lim(x→-∞)(1/x-2/x²)/(1+1/x)^2
=0/1
=0lim(x→-∞)x-2/(x+1)^2 (分子分母同除以x平方)这里能详解吗?能列一条式子出来吗?(x-2)/x²=1/x -2/x²(x+1)^2 /x^2=(1+1/x)^2