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35 votes
35 votes
Find (fogoh)(x)



f(x) = 5x^4-6,
g(x) = 10x - 7,
h(x)=√x

User Katch
by
2.8k points

1 Answer

13 votes
13 votes

Answer:

(f∘g∘h)(x) = 5(10√x -7)⁴ -6

Explanation:

You want to find (f∘g∘h)(x), given that ...

  • f(x) = 5x⁴ -6
  • g(x) = 10x -7
  • h(x) = √x

Substitution

The composition (f∘g∘h)(x) is evaluated right to left. This means ...

(f∘g∘h)(x) = f(g(h(x)))

(f∘g∘h)(x) = f(g(√x)) = f(10√x -7)

(f∘g∘h)(x) = 5(10√x -7)⁴ -6

__

Additional comment

This can be expanded to ...

(f∘g∘h)(x) = 50000x² -140000x√x +147000x -68600√x +11999

<95141404393>

User TMNuclear
by
2.7k points
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