Question

Question #aa8b1

Answer 1

See below

Explanation:

Once you get further into your mathematical studies, you'll see that we refer a function as a mapping of a set of inputs to a set of outputs.

In this case, we are mapping the function `a` to `a^2-4`. We would write the mapping as `f:a |-> a^2-4`.

The set of all acceptable inputs is called the domain and the set of all acceptable outputs is called the range.