lim(1-K/x)^X=e^2求K,K最后算出来是2,过程是如何的,

Question

lim(1-K/x)^X=e^2 求K,K最后算出来是2,过程是如何的,

Answer 1

lim(1-K/x)^X
=lim(1+(-K/x))^X/-k*(-k)
=e^(-k)=e^2
k=-2吧