Stitz Zeager Open Source Mathematics

Home to free and open precalculus materials

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Older Editions

All of our previous editions are available for download below.  Click on the title to obtain the .pdf file.

July 2011

  • Click to obtain the Precalculus, 3rd Edition free eBook (.pdf) (July 2011)
  • Click to obtain the College Algebra, 3rd Edition free eBook (.pdf)  (July 2011) 
  • Click to obtain the College Trigonometry, 3rd Edition free eBook  (.pdf) (July 2011)
  • Click to obtain our errata for the 3rd Edition Textbooks (.pdf)


August 2010: 

  • College Algebra & Trigonometry
  • College Trigonometry
  • College Algebra


June 2010:

  • College Algebra


December 2009:

  • College Algebra


August 2009:

  • College Algebra
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