log₂2.5+log₂1/40=
问题描述:
log₂2.5+log₂1/40=
答
log2 5/2+log2 1/40 =log2 (2.5*1/40)=log2 1/16= - log2 16 =-4
log₂2.5+log₂1/40=
log2 5/2+log2 1/40 =log2 (2.5*1/40)=log2 1/16= - log2 16 =-4