Question

Sabendo que log3 5=1,46 e log3 6=1,63, calcule:

A- log3 30
B- log3 150
C- log3 1,2

Answer 1

Log3 30 = Log3 (6×5) = Log3 6 + Log3 5 = 1,63+1,46=3,09

Log3 150= Log3 (30×5)= Log3 30 + Log3 5 = 3,09+ 1,46= 4,55
Log3 1,2 = Log3 (12/10)= Log3 (6/5)= Log3 6 - Log3 5= 1,63-1,46= 0,17