Key learning points

1. A function has a set of inputs and outputs.
2. For any valid input, there is an output.
3. A function takes an input and performs a series of operations, leading to an output.
4. The set of inputs is called the domain.
5. The set of outputs is called the range.

Keywords

• Function - A function is a mathematical relationship that uniquely maps values of one set to the values of another set.

• Domain - The domain of a function is the set of values that the mapping is performed on.

• Range - The range of a function is the set of values mapped to by the function and the stated domain.

Common misconception