This free textbook is brought to you by:

• The author, Karl-Dieter Crisman, and the dozens of students who have class-tested it
• The hosting generosity of Gordon College and their Department of Mathematics and Computer Science
• Rob Beezer and the whole team at PreTeXt (formerly known as MathBook XML), the engine for producing such books
• The entire developer team of SageMath for providing comprehensive open source mathematics software
• The computational resources of the Sage cell server generously provided by SageMath, Inc.
• The Gordon College Faculty Development Program and Design Center for cover design and logo.

Please contact the author via email (karl (dot) crisman (at) gordon (dot) edu) for questions or information. For adoption information (reporting or inquiries regarding) also email, or just visit Course Adoption.