Question

function's short note​

Answer 1

Explanation:

Function notation is a simpler method of describing a function without a lengthy written explanation. The most frequently used function notation is f(x) which is read as “f” of “x”. In this case, the letter x, placed within the parentheses and the entire symbol f(x), stand for the domain set and range set respectively

Answer 2

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Let A and B be two non-empty sets, then a rule f which associates each element of A with a unique element of B is called a function or mapping from A to B. If f is a mapping from A to B, we write f : A → B (read as f is a mapping from A to B).