Question

Sendo log 2 = 0,30, detemine o log50.

1,2
1,4
1,7
1,9
2,1

Answer 1

Reescreva log 50 em termos de log 2.

log 50

= log (25 * 2)

= log 5² + log 2

= 2log 5 + log 2

= 2log (10/2) + log 2

= 2(log 10 - log 2) + log 2

= 2log 10 - 2log 2 + log 2

= 2 · 1 - log 2

= 2 - 0.30

= 1.7

Bons estudos ma dear.