LOG2^3=A,LOG2^5=b,则log2^9/5值是多少

问题描述:

LOG2^3=A,LOG2^5=b,则log2^9/5值是多少

log2^9/5
底数是2
真数是9/5
换个写法:LOG(n,m)表示以m为底n的对数
LOG(9/5,2)=LOG(9,2)-LOG(5,2)=2*LOG(3,2)-LOG(5,2)=2A-b