Pregunta
\[ f(x) = 3x + 4 \quad g(x) = 2x - 3 \] \[ \text{Find: } f \circ g(x) \]
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Mar 11,2025
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Respuesta verificada por el tutor
Responder
\( f \circ g(x) = 6x - 5 \)
Solución
Simplify the expression by following steps:
- step0: Multiply the terms:
\(f\left(gx\right)\)
- step1: Multiply the terms:
\(fgx\)
Expand the expression \( 3(2x - 3) + 4 \)
Simplify the expression by following steps:
- step0: Add the terms:
\(3\left(2x-3\right)+4\)
- step1: Expand the expression:
\(6x-9+4\)
- step2: Add the numbers:
\(6x-5\)
To find \( f \circ g(x) \), we need to substitute \( g(x) \) into \( f(x) \).
1. We have the functions:
\[
f(x) = 3x + 4
\]
\[
g(x) = 2x - 3
\]
2. Now, we substitute \( g(x) \) into \( f(x) \):
\[
f(g(x)) = f(2x - 3)
\]
3. Substitute \( 2x - 3 \) into \( f(x) \):
\[
f(2x - 3) = 3(2x - 3) + 4
\]
4. Now, we expand this expression:
\[
= 6x - 9 + 4
\]
\[
= 6x - 5
\]
Thus, the result of \( f \circ g(x) \) is:
\[
f \circ g(x) = 6x - 5
\]
Respondido por UpStudy AI y revisado por un tutor profesional
Como
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Mind Expander
To find \( f \circ g(x) \), we will substitute \( g(x) \) into \( f(x) \). Start by calculating \( g(x) \): \[ g(x) = 2x - 3 \] Next, we substitute \( g(x) \) into \( f(x) \): \[ f(g(x)) = f(2x - 3) = 3(2x - 3) + 4 \] Now, distribute the 3: \[ = 6x - 9 + 4 \] Combine like terms: \[ = 6x - 5 \] Thus, the result of \( f \circ g(x) \) is: \[ f \circ g(x) = 6x - 5 \]

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