Real Functions
Definition
Real functions are functions that take real numbers as inputs and produce real numbers as outputs. They describe relationships between real-world quantities such as time, distance, temperature, or money.
Analogy
Imagine you're at a vending machine where you insert coins (inputs) and get snacks (outputs). In this scenario, the vending machine represents a real function because it takes real numbers (coins) as inputs and gives you real things (snacks) as outputs.
Related terms
Domain: The set of all possible input values for a function.
Range: The set of all possible output values for a function.
Graphs: Visual representations of functions using points on coordinate planes.
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