Log de raiz quadrada de 8 na base 4 => vamos chamar de "a"
Log de 1/3 na base 9 => vamos chamar de "b"
antilog -2 na base 2 => vamos chamar de "c"-----------------------------------------------------------------
4^a = 8^(1/2)
[2^(2)]^a = [2^3]^(1/2)
2^(2a) = 2^(3/2)
2a = 3/2
a = 3/4
---------------------------------------------------------------------
9^b= 1/3
(3^2)^b = 3^(-1)
3^(2b) = 3^(-1)
2b = -1
b = -1/2
-----------------------------------------------------------------------
c = 2^(-2)
c = 1/(2^2)
c = 1/4
-------------------------------------------------------------------------
a + b + c = (3/4) + (-1/2) + (1/4)
a + b + c = 1/2