Michael M. Dougherty and John Gieringer wrote:Our textbook is meant to be read--curled up with and read! We go into much detail, with more examples than most in the topics which are the most confusing. If you currently are using one of the standard textbooks, you can use ours as a supplement. If you want to learn calculus on your own, ours can be your main text (though the standard ones have more exercises). We occasionally hear from folks around the world who happened upon this site that they found it useful, and we hope you agree.

A few "differences" might turn off some readers, particularly regarding the first two chapters. We spend a chapter on symbolic logic so we can use it elsewhere, including a rather in-depth (for a calculus book) development of epsilon-delta proofs. If you just want more complete examples for derivative and integral problems, you can go to those sections (preferably from the current "whole book" file linked above). If you want a much deeper, and more useful and "form-based" discussion of limits (to better prepare students for things like convergence tests and improper integrals), check those out.

Another difference is that there is a very expanded Chapter 2, which is still preliminary but has some good algebraic stuff which is easier to accomplish after raising the sophistication level, made possible by a study of Chapter 1's logic.

While this is a work in progress, some chapters and more sections are basically complete and have been successfully used in courses. We're hoping this is the year we can really push it towards completion.