Icons used on this book
The icons used in this book have meanings; for example:
These chunks introduce the objectives for the sections of the book.
These chunks offer helpful information.
This icon flags questions that have video solutions in the online book: A narrator works through the question, explaining the solution.
These chunks highlight common mistakes or warnings, about (for example) a particular concept or about using a formula.
These chunks highlight optional questions, that you might like to do in private study.
These chunks highlight drill questions, for practicing some of the mathematical computations.
These chunks highlight questions to be completed before your tutorial.