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The source code is available at

https://github.com/mooculus/calculus

This text contains source material from several other open-source texts:

• Single and Multivariable Calculus: Early Transcendentals. Guichard. Copyright 2015 Guichard, Creative Commons Attribution-NonCommercial-ShareAlike License 3.0.

  http://communitycalculus.org/

• APEX Calculus. Hartman, Heinold, Siemers, Chalishajar, Bowen (Ed.). Copyright 2014 Hartman, Creative Commons Attribution-Noncommercial 3.0.

  http://www.apexcalculus.com/

• Elementary Calculus: An Infinitesimal Approach. Keisler. Copyright 2015 Keisler, Creative Commons Attribution-NonCommercial-ShareAlike License 3.0.

  http://www.math.wisc.edu/~keisler/calc.html

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