Question

Admitindo -se que log5 2=0,43 e log5 3=0,63, determine o valor de log5 6.

Answer 1

log 5.2=log5 + log2 =0,43---------> log2 = 0,43-log5
log 5.3=log5+ log3 =0,63---------->log3=0,63-log5
log 5.6=log5+ log6=??

log6= log2.3=log2+log3 

log 5.6=log5+ log6= log5 +log2+log3
log5 + 0,43 - log5 + 0,63 -log5=x 
X=1,06-log5