Question

Sabendo que log5 2= 0,43, Log 5 3 = 0,68, Calcule log12

Answer 1

$log(12) = log( {2}^{2} \times 3 ) \\ = log({2}^{2} ) + log(3) \\ = 2 \times log(2) + log(3) \\ = 2 \times 0.43 + 0.68 \\ = 0.86 + 0.68 = 1.5$