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

Coefficient bounds for functions with a positive real part are used in a rather novel way to find sharp bounds for the first six coefficients of a function which is inverse to a regular normalized ...

A function links an input value to an output value. Functions are written in function notation with the name of the function (usually f or g), a variable written in brackets and an expression ...