Category Editing

Active Calculus 2018 – new edition

I’m excited to share several updates to Active Calculus: 1. New 2018 edition of Active Calculus – single variable The 2018 HTML version is now live at  The PDF will be posted in the near future on a new page at GVSU’s ScholarWorks site.  And the 2018 edition will be available for purchase on Amazon […]

Prelude to Active Calculus – feedback sought

I’ve been awarded a sabbatical for the fall semester of 2018 to write a new free, open-source textbook for GVSU’s new MTH 124: Functions and Models.  The purpose of this course is to prepare students not-yet-ready for calculus for a first semester course in calculus. MTH 124 has run for three semesters at Grand Valley, […]

A few updates to the HTML version of Active Calculus

I’ve made the following corrections to fix some typos and other errors: The statement of the quotient rule in Section 2.5 mistakenly stipulated that the derivative of the denominator be nonzero, when of course it’s the denominator function itself must be nonzero. In Exercise #6 in Section 3.4, the cost of the top was accidentally […]

2017 version of Active Calculus (single variable)

I’m excited to announce several changes to single variable Active Calculus along with some corresponding updates that will occur over the next month or so. + There is now a new HTML version of the text. Thanks to Rob Beezer’s Mathbook XML (now called PreTeXt), this output format is optimized for viewing on a range […]

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, […]

Active Calculus – errata pages

An overdue addition for Active Calculus (single) and the addition to AC Multivariable that prompted it:  errata pages for both. You can find a list of currently identified errors in each text at these links:  single variable, multivariable. Of course, if you find errors that need to be added to either page, please contact me.

Active Calculus: Single Variable, 2015 Version now available

This summer, in addition to working with Steve and David on AC3, I went through the original single-variable version and implemented changes to correct typos, clarify questions, and more in response to over 100 suggestions I received from users.  To all of you who sent those to me:  thank you. I’m pleased to say that […]