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Anna007 [38]
3 years ago
8

If h(x)=(f o g)(x) and h(x)=\root(4)(x+7), find g(x)=\root(4)(x+1)

Mathematics
2 answers:
valentinak56 [21]3 years ago
7 0
If you're looking for f(x)

then 

g(x) = sqrt(4x + 4)
h(x) = sqrt(4x + 28)

h(x)-g(x) = 24

meaning that sqrt(24) must be the constant of f(x)

f(x) = x(sqrt(24))

h(x) = f(g(x)) = (sqrt(24))(sqrt(4x+4)) = sqrt(4x+4+24) = sqrt(4x+28)
Aneli [31]3 years ago
3 0

Answer:

f(x) = \sqrt[4]{x+6}

Step-by-step explanation:

Let h(x) = \sqrt[4]{x+7} and g(x) = \sqrt[4]{x+1}. By some algebraic handling:

h(x) = \sqrt[4]{(x+1)+6}

h(x) = \sqrt[4]{(\sqrt[4]{x+1} )^{4}+6}

But g(x) = \sqrt[4]{x+1}. Therefore:

f(x) = \sqrt[4]{x+6}

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