Question

Considerando log 5 = 0,699 e log 3 = 0,477. O log
75 é?

Answer 1

75    3
25    5
5      5
1

log 3+log 5.+log 5
0,477+0,699+0,699
=1,875

Answer 2

 log 5 = 0,699 e log 3 = 0,477. O log 5 = Log 75 é?

Log 75 = Log(3.5^2) ==> Log3 + Log 5^2  
Log3 + 2Log5 ==> 0,477 + 2(0,699)

0,477 + 1,398
   1, 875