您好，㏒₄8=1/2㏒₂2³=3/2㏒₂2=3/2=1.5另外，a^log(a)(N)=N (a>0 ，a≠1）推导：log(a) (a^N)=N恒等式证明在a>0且a≠1，N>0时设：当log(a)(N)=t，满足(t∈R)则有a^t=N;a^(log(a)(N))=a^t=N;证明完毕
log4 8＝1.5
㏒₄8=1/2㏒₂2³=3/2㏒₂2=3/2=1.5
