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Question
let f(x) = x² and g(x) = 3x + 1. find (f ∘ g)(5). a. 160 b. 76 c. 256 d. 400
Step1: Entender la composición de funciones
La composición \((f \circ g)(x)\) significa \(f(g(x))\). Primero, calculamos \(g(5)\).
\(g(x) = 3x + 1\), entonces \(g(5)=3(5)+1 = 15 + 1 = 16\).
Step2: Aplicar \(f\) a \(g(5)\)
\(f(x)=x^2\), entonces \(f(g(5)) = f(16) = 16^2 = 256\).
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C. 256