Question

Sabendo que log 3= 0,48 e log 2= 0,30 e log 7= 0,48 , caucule :

D) log 5√2

Answer 1

Resposta:

log 5√2 = log 5  + log √2

=log 5 + log 2^(1/2)

=log 5 + (1/2)* log 2

= log 10/2 + (1/2) * log 2

= log 10  - log 2 + (1/2) * log 2

= 1 - 0,3 + (1/2) * 0,3 = 0,85