Welcome to Elementary Linear Algebra, Eighth Edition. I am proud to present to you this new edition. As withall editions, I have been able to incorporate many useful comments from you, our user. And while much haschanged in this revision, you will still find what you expect—a pedagogically sound, mathematically precise, andcomprehensive textbook. Additionally, I am pleased and excited to offer you something brand new— a companionwebsite at LarsonLinearAlgebra.com. My goal for every edition of this textbook is to provide students with thetools that they need to master linear algebra. I hope you find that the changes in this edition, together withLarsonLinearAlgebra.com, will help accomplish just that.