New Year Updates to AC

Happy New Year everyone.  Here are a couple of brief updates if you are planning to use Active Calculus in the upcoming winter semester.

Thanks to everyone who sent us errors they found in the text, as well as other suggestions.  Steve has updated the multivariable version of the text to fix all known errors, and you can download the most up-to-date text from the page above, or directly from

I have updated the errata page for the single variable edition, but haven’t changed the original PDF.  My reasoning here is that the current PDF matches the print version for sale, and I would prefer that the e-document and print document match exactly to limit confusion.  As such, I will be updating both at the end of the coming semester.  For now, please use the errata page as an overview of known errors.  As always, if you find additional errors, please contact me to share them:  boelkinm at gvsu dot edu.  You may download the 2015 version of the text from the page above or directly from


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