謝謝,請證明
(a*b)^m=a^m * b^m;
(a^m)^n=a^(m*n);
.....
(a*b)^m = (a*b) * (a*b) *.........* (a*b) (m個(a*b))---所以有m個a和m個b
= (a * a * ......*a) * (b * b * ........ * b)
(m個a) (m個b)
= a^m * b^m
(a^m)^n = a^m * a^m * ............. * a^m
(n個 a^m)
= (a * a *............* a) * (a * a *............* a) *...........*(a * a *............* a)
(m個a) (m個a) .......... (m個a)
(m個a)的數(shù)目是n ------ a的數(shù)目是mn個
= a^ (m*n)