This book is a short summary of the topic of functions. It teaches the basics and gives students the tools and concepts necessary so that they have the confidence to tackle any questions they encounter. It is hoped that it will help students to have an Eureka! moment when they tackle a question.

This is a Quick Revision Guide written for the Singapore-Cambridge General Certificate of Education Advanced Level (GCE A-Level) examination for H2 Mathematics (subject code 9758). It is a general summary of all the topics that are tested.