A function is a rule or set of rules or instructions for changing one input number into another output number. Functions are written in function notation with the name of the function (usually f ...

Learn about function notation, how to find an inverse function by changing the subject, and how to work with composite functions.

Function spaces, such as Bergman, Hardy, and Q spaces, provide structured environments that categorise these functions based on integrability, smoothness, and boundary behaviour.