时间:2022-10-16 教育常识 查看: 47
1、对数基本性质:a^(log(a)(b))=b;log(a)(a^b)=b;log(a)(MN)=log(a)(M)+log(a)(N);log(a)(M÷N)=log(a)(M)-log(a)(N);log(a)(M^n)=nlog(a)(M);log(a^n)M=1/nlog(a)(M)。
2、其他性质:换底公式:log(a)(N)=log(b)(N)÷log(b)(a);log(a)(b)=1/log(b)(a);对数函数的图象都过(1,0)点。