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Unformatted text preview: Functions
Sections 3.1 Definition of Function
Definition
A function consists of a set of inputs, called the domain a rule by which each input determines one and only one output a set of outputs, called the range Domains
Domains Unless information to the contrary is given, the domain of a function f consists of every real number input for which the function rule produces a real number output.
The domain may not consist of all real numbers for the following cases: Division by zero
The square root of a negative number (or nth root, where n is even) Greatest Integer Function
Greatest For any number x, round down to the nearest integer less than or equal to x. Joke Time
Joke Why would Snow White make a good judge? Because she’s the fairest of them all! Why does Santa always go Why does Santa always go down the chimney?
Because it soots him! ...
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 Winter '11
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 Calculus

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