Question
\[ f(x) = 3x + 4 \quad g(x) = 2x - 3 \] \[ \text{Encuentra: } f \circ g(x) \]
Ask by Reid Medina. in Chile
Jan 24,2025
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Answer
\( f \circ g(x) = 6x - 5 \)
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The Deep Dive
Para encontrar \( f \circ g(x) \), primero debemos sustituir \( g(x) \) en la función \( f(x) \). Dado que \( g(x) = 2x - 3 \), procedemos de la siguiente manera: \[ f(g(x)) = f(2x - 3) \] Ahora sustituimos \( 2x - 3 \) en \( f(x) = 3x + 4 \): \[ f(2x - 3) = 3(2x - 3) + 4 \] Desarrollamos la expresión: \[ = 6x - 9 + 4 \] \[ = 6x - 5 \] Así que, \( f \circ g(x) = 6x - 5 \).