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Nana76 [90]
2 years ago
11

Which of the following pairs of functions are inverses of each other?

Mathematics
2 answers:
Elden [556K]2 years ago
8 0

Answer: A

Step-by-step explanation: A P E X

kherson [118]2 years ago
3 0

Answer:

Proved!

Step-by-step explanation:

For two functions f(x) and g(x) to be inverses of each other then;

f(g(x)) = x and g(f(x)) = x condition must be satisfied.

<u>Checking: A. f(x) = 7x³ + 10 and g(x) = ∛</u>\frac{x - 10}{7}<u />

<u />

So f(g(x)) = 7(\sqrt[3]{(x- 10)/7})³ + 10

We get; 7(\frac{x - 10}{7}) + 10 = x - 10 + 10 = x (*<em>This is correct!)</em>

<em />

So g(f(x)) = \sqrt[3]{((7x^3 + 10) - 10)/7}

Ten cancels out and we are left with;

\sqrt[3]{7x^3/7} = \sqrt[3]{x^3} = x (* <em>This is also correct!)</em>

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