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Preface A note on the print version

This book aims to develop readers’ ability to reason about linear algebraic concepts and to apply that reasoning in a computational environment. In particular, Sage is introduced as a platform for performing many linear algebraic computations since it is freely available and its syntax mirrors common mathematical notation.
Print readers may access Sage online using either the Sage cell server 4  or a provided page of Sage cells. 5 
Throughout the book, Sage cells appear in various places to encourage readers to use Sage to complete some relevant computation. In the print version, these may appear with some pre-populated code, such as the one below, that you will want to copy into an online Sage cell.
Empty cells appear as shown below and are included to indicate part of an exercise or activity that is meant to be completed in Sage.