lim(1-2x)^(1/x)=?lim下面是X趋向于0

问题描述:

lim(1-2x)^(1/x)=?lim下面是X趋向于0

(1-2x)^[1/(-2x)]的极限是e,则(1-2x)^[1/(-2x)]=【(1-2x)^[1/(-2x)]】^(-2),它的极限是e^(-2)=1/(e²)

=lim[(1-2x)^(-1/2x)]^(-2x/x)=e^(-2)=1/e^2

lim(x→0)(1-2x)^(1/x)
=lim(x→0)[(1-2x)^(-1/2x)]^(-2)
=e^(-2)

e^2