limx趋于0+,x^2[e^(1/x)]=

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 16:35:31

limx趋于0+,x^2[e^(1/x)]=

lim(x→0+)x^2[e^(1/x)] (t=1/x)
=lim(t→∞)e^t/t^2 (∞/∞)
=lim(t→∞)e^t/(2t)
=0