Question

1- Dados log a= 5 , b= 3, calcule log ab
2- Dados log a= 5 e log c= 2 , calcule:
a) log(a/c)
b) log (a.c)
3- qual valor de log (2 sobre 2 sobre 3) ?

Answer 1

1. logab = loga + logb = 5+3 = 8

2. A) log(a/c) = loga - logc = 5-2 = 3
B)log(a.c) = loga + logc - 5+2 = 7

3. log(2/2/3) = log(2/6) = log(1/3) = log1 - log3 = 0 - log3 = -log3 = -0.4771 aprox

Answer 2

1) log ab = log a + log b = 5 + 3 = 8

2) a) log a/log c = 5-2=3
b) log a . log c= 5 + 2 = 7
c) log 2/2/3 = log 2 - log 2 - log 3 = - log 3