GiggleSquid
if f(x)=2x+8 and g(x)=x^4, what is (gof)(3)



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GiggleSquid
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the o being the little circle thing

ParthKohli
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\(g \circ f (x) = g(f(x)) \)

ParthKohli
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\(g(2x + 8) \Longrightarrow (2x + 8)^4\)

ParthKohli
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\(g(f(3))\)

lgbasallote
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first find f(3)
\[f(3) = 2(3) + 8 \implies 6 + 8 \implies 2\]
now find g(2) \[g(f(3)) = g(2) = (2)^4 \implies 2 \times 2\times 2 \times 2 \implies 16\]

ParthKohli
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That'd look like \(g(f(x)) = (2x + 8)^4 \Longrightarrow (2(3) + 8)^4\)

GiggleSquid
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thanks for the quick reply parth! Good answer lg

ParthKohli
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That's right. It's an answer.