All the values that go into a function.

The output values are called the range.

Domain → Function → Range

Example: when the function f(x) = x

The output values are called the range.

Domain → Function → Range

Example: when the function f(x) = x

^{2}is given the values x = {1,2,3,...} then the domain is simply those values {1,2,3,...}
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