Question

what is function

Answer 1

Function

A relation for which each element of the domain corresponds to exactly one element of the range. For example, is a function because each number x in the domain has only one possible square root. On the other hand, is not a function because there are two possible values for any positive value of x.


Function Operations

Definitions for combining functions by adding, subtracting, multiplying, dividing, and composing them.

Answer 2

* ... \(y(x)=x^2\) is a function

** ... \(x(y)=y^2\) is not a function