Domain - IB Maths Definition
Reviewed by: Naomi C
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What is domain in IB maths?
In the context of the IB Maths course, a domain refers to the complete set of possible input values for which a given function is defined.
Essentially, it includes all the values that can be used as inputs (usually represented as 
) in a function. This must exclude any values that would result in mathematical contradictions or undefined expressions, such as division by zero or the square root of a negative number when dealing with real numbers.
Domain revision resources to ace your exams
Save My Exams has a great range of resources to explore the concept of domain within the topic of functions. Try exploring these revision notes on language of functions, composite & inverse functions and graphing functions.
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