Question

Dados log 2= 0,30
log 3=0,48 e log5=0,70
(Calcule)
A)Log45=

Answer 1

45 = 3 x 3 x 5

log 45 = log 3 x 3 x 5
log 3 x 3 x 5 = log 3 + log 3 + log 5
0,48 + 0,48 + 0,70
log 45 = 1,66