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Question 10 of 12, Step 2 of 2CorrectGiven two functions f(x) and g(x):S(x) = 3x2 + 4, 8(x) = 3x - 2Step 2 of 2: Form the composition (88)(x).Answer(88)(x) =

Question 10 of 12, Step 2 of 2CorrectGiven two functions f(x) and g(x):S(x) = 3x2 + 4, 8(x-example-1

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Composite Functions

Given the functions:


\begin{gathered} f(x)=3x^2+4 \\ g(x)=3x-2 \end{gathered}

It's required to find the composition of g and f (g o f)(x).

The composition of g and f is equivalent to substituting f(x) into g(x) as follows:


(g\circ f)(x)=3(3x^2+4)-2

Operating:


\begin{gathered} (g\circ f)(x)=9x^2+12-2 \\ Simplifying: \\ (g\circ f)(x)=9x^2+10 \end{gathered}

User Willem Bressers
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