求值 log【9(下标)】3+log【 9(下标)】27 log【2】(1/2)- log【1/2】2

问题描述:

求值 log【9(下标)】3+log【 9(下标)】27 log【2】(1/2)- log【1/2】2

log9(3)+log 9(27)
=1/2+3/2
=2
log2(1/2)- log1/2(2)
=-1-(-1)
=0