Questão da prova Petrobrás?

Considere as funções g(x) = log2 x e h(x)=  logb x ,

ambas de domínio R* + .

Se h(5) = 1/2 , então g(b + 9) é um número real compreendido

entre

(A) 5 e 6

(B) 4 e 5

(C) 3 e 4

(D) 2 e 3

(E) 1 e 2

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