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bmelyk

  • 3 years ago

just looking for another answer to be checked!

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  1. bmelyk
    • 3 years ago
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    Use the functions given below to determine the following. f(u) = 3u^4 + 4u g(x) = cos(x)

  2. bmelyk
    • 3 years ago
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    f (g(x)) =\[3\cos^4x+4cosx\] f ' (u) = 12u^3+4 f ' (g(x)) = 12cos(x)^3+4 g'(x)=-sinx (f compose g) '(x) =-12cos(x)^3*sin(x)-4*sin(x)

  3. uzumakhi
    • 3 years ago
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    yes it's right

  4. bmelyk
    • 3 years ago
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    all of them? awesome! haha.

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