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kiruha [24]
2 years ago
11

The function f(x) = x + 21 is one-to-one.

Mathematics
1 answer:
earnstyle [38]2 years ago
3 0

Answer:

a. D. f⁻¹(x) = x - 21, for all x

b. f(f ⁻¹(x)) = f(x - 21) = x and f ⁻¹(f(x)) = f ⁻¹(x + 21) = x

Step-by-step explanation:

See attached picture.

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Step-by-step explanation:

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