1.log(c)(a*b)=log(c)a+log(c)b －－相当于同底数幂相乘,底数不变“指数相加”log(c)(a/b)=log(c)a/log(c)b －－相当于同底数幂相除,底数不变“指数相减”2.log(c)(a^n)=n*log(c)a －－相当于幂的乘方,底数...