Unformatted text preview: type of relation between sets.
We denote a function from X to Y by f : X → Y , where f is
the name of the function.
The set X is called the domain of f .
We call Y the target set of f .
We write y = f (x ) for the assignment of x ∈ X to y ∈ Y
The element y = f (x ) is called the function value at x .
The set {f (x )  x ∈ X } is called the range of f . Outline Functions Representing Functions The Domain and Range Evaluating Functions Average Rate of Change Examples Example
1 Let X be students in Math 1050, and let Y be the chairs in
the classroom. If f assigns each student x in X to the chair
y ∈ Y he/she is sitting on, then f is a function from X to Y . 2 f (x ) = 5 is the function that assigns each real number x to
the number 5. What is its domain a...
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 Spring '14
 K.JPlatt
 Algebra, Rate Of Change, average rate, Department of Mathematics, Snow College

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