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Concept

Input and Output - Function

The input of a function is the value that goes into the function. The result of the function is called the output.

Machine simulating the function f(x)=x-3. Every number that enters in the machine is increased by 2.

The

x -

value in the function notation

f (x)

represents its input and the value of the function, usually called the

y -

value, represents the output.

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