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About this Guide

  • This book is only intended for revision purposes, details are brief and you may need to consult a textbook for more detailed explanations.
  • Remember that some of the topics in Option A require knowledge of the principles in the core syllabus. References to the core guide are given where appropriate.
The following features are also included to help you.

Author's tip

Hints and tips on how to approach your revision effectively. Exam tips include advice on how to maximise your mark, guard against common misconceptions and avoid making mistakes.

Key information

Key definitions, formulae, facts and information.

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