Evaluating Functions

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What is a function?

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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.

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What does it mean to evaluate a function?

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Evaluating a function means substituting a specific value for the variable in the function's expression to find the corresponding output.

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What is the notation for a function evaluated at a specific point?

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What is the difference between a function and a relation?

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A function is a specific type of relation where each input has exactly one output, while a relation can have multiple outputs for a single input.

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