Question

dados log 2=0, 3010 e logo 3 = 0,4771, calcule log 72

Answer 1

72 = 2 x 2 x 2 x 3 x 3
log 72 = log (2 x 2 x 2 x 3 x 3) = log 2 + log 2 + log 2 + log 3 + log 3 = 3 x log 2 + 2 x log 3 = 3 x 0,3010 + 2 x 0,4771 = 0,9090 + 0,9542 = 1,8632