What is a Function?
In mathematics, a function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output. Think of it like a vending machine: you select a button (input), and you receive a specific snack (output).
Understanding Domain and Range
The domain of a function is the complete set of possible values of the independent variable. In simple terms, it's all the possible 'x' values that will make the function work.
The range is the complete set of possible output values (the 'y' values, or the dependent variable).
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