Question

Which statement verifies that f(x) and g(x) are inverses of each other?
mc016-1.jpg
mc016-2.jpg and mc016-3.jpg
mc016-4.jpg
mc016-5.jpg and mc016-6.jpg

Answer 1

You verify that f and g are inverses by showing their compositions give the identity function. In other words, show

- f(g(x)) = x for all x in the domain of g, and
- g(f(x)) = x for all x in the domain of f.

The choice (or image) that states both of those equalities is the correct one.