Cambridge IGCSE Additional Mathematics · Syllabus 0606 · Functions
Domain and Range
What is Domain and Range?
The domain of a function is the set of input values it is permitted to take; the range, also called the image set, is the set of output values that domain actually produces. Changing the domain changes the range, so a domain must be stated or deduced before any range can be found.
This definition is part of the Functions chapter in Cambridge IGCSE Additional Mathematics.