lim[x→0] [e^x-e^(2x)]/x
=lim[x→0] e^x(1-e^x)/x
=lim[x→0] -e^x(e^x-1)/x
e^x-1与x是等价无穷小
=lim[x→0] -e^x
=-1
希望可以帮到你,不明白可以追问,如果解决了问题,请点下面的"选为满意回答"按钮.
lim[x→0] [e^x-e^(2x)]/x
=lim[x→0] e^x(1-e^x)/x
=lim[x→0] -e^x(e^x-1)/x
e^x-1与x是等价无穷小
=lim[x→0] -e^x
=-1
希望可以帮到你,不明白可以追问,如果解决了问题,请点下面的"选为满意回答"按钮.