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GiggleSquid

  • 3 years ago

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

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  1. GiggleSquid
    • 3 years ago
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    the o being the little circle thing

  2. ParthKohli
    • 3 years ago
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    \(g \circ f (x) = g(f(x)) \)

  3. ParthKohli
    • 3 years ago
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    \(g(2x + 8) \Longrightarrow (2x + 8)^4\)

  4. ParthKohli
    • 3 years ago
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    \(g(f(-3))\)

  5. lgbasallote
    • 3 years ago
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    first find f(-3) \[f(-3) = 2(-3) + 8 \implies -6 + 8 \implies 2\] now find g(2) \[g(f(-3)) = g(2) = (2)^4 \implies 2 \times 2\times 2 \times 2 \implies 16\]

  6. ParthKohli
    • 3 years ago
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    That'd look like \(g(f(x)) = (2x + 8)^4 \Longrightarrow (2(-3) + 8)^4\)

  7. GiggleSquid
    • 3 years ago
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    thanks for the quick reply parth! Good answer lg

  8. ParthKohli
    • 3 years ago
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    That's right. It's an answer.

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