Question

usando as aproximações log 2 = 0,301, log 3= 0,477 e log 5=0,699 calcule o q se pedelog 20log 18log 4,5

Answer 1

log 20=log(2².5)
log20=log2²+log5
log20=2.log2+log5
log20=2.0.30+0.70
log20=0.6+0.70
log20=1.3