Question

Aplique as propriedades
dos logaritmos abaixo:
a)log2 (4 . 2 )
b)log5 2/5
c)log3 9^2
d)log2 3√8^4

Answer 1

Resposta:

a) log2(4*2) = log2(8) = log2(2^3) = 3

b) log5(2/5)

= log5(2) - log5(5)

= log5(2) - 1

= log(2)/log(5) - 1

= 0,301/0,699 - 1

= -0.569

c) log3(9^2) = log3(3^4) = 4

d) log2(2^4) = 4