對數的性質及推導 定義: 若a^n=b(a>0且a≠1) 則n=log(a)(b) 基本性質: 1、a^(log(a)(b))=b 2、log(a)(a^b)=b 3、log(a)(MN)=log(a)(M)+log(a)(N); 4、log(a)(M÷N)=log(a)(M)-log(a)(N); 5、log(a)(M^n)=nlog(a)(M ...
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