For which pair of function is (g*f) (a) = |a|-2

1. f (a) = a^2-4 and g (a) = sqaureroot a

2. f (a) = 1/2a-1 and g (a) = 2a-2

3. f (a) = 5+a^2 and g (a) = sqaureroot (a-5) - 2

4. f (a) = 3 - 3a and g (a) = 4a-5

Question

Giovanna Alvarez

27 August, 18:27

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Dolly · Answer 1

None of the pairs will deliver (g*f) (a). If you intend (g∘f) (a), then ...

... selection 3 is appropriate.

For which pair of function is (g*f) (a) = |a|-21. f (a) = a^2-4 and g (a) = sqaureroot a2. f (a) = 1/2a-1 and g (a) = 2a-23. f (a) = 5+a^2 and g (a) = sqaureroot (a-5) - 24. f (a) = 3 - 3a and g (a) = 4a-5