不存在这个公式
lg2*lg3 ≈ 0.33071525249416
lg5 ≈ 0.69897000433602
1、a^(log(a)(b))=b
2、log(a)(MN)=log(a)(M)+log(a)(N);
3、log(a)(M÷N)=log(a)(M)-log(a)(N);
4、log(a)(M^n)=nlog(a)(M)
5、log(a^n)M=1/nlog(a)(M)