Question

sabendo que log5=0,69 e log3=0,47 , calcule :
Log 15 =

Answer 1

log 15 ⇒ log (5.3) ⇒ log 5 + log 3 ⇒ 0,69 + 0,47 ⇒ 1,16

Log 15 = 1,16.