Question

Calcule:
A) log2 1/2
B) log2 0,5+ ln25

Answer 1

a) log de 1/2 na base 2 = 2^x = 1/2 => 2^x = 2^(-1) => x = -1

b) 0,5 = 1/2 logo fica igual ao de cima + ln25 => ln 5^2 => 2ln5
-1 + 2ln5