Precalculus by Darel Hardy, Fred Richman, Carol Walker, and Robert Wisner was published as a part of the Hardy Calculus Library by Hardy Calculus in 2008.
After writing Calculus: Understanding Its Concepts and Methods, we knew that we had a fairly efficient method for developing classroom materials that use Scientific Notebook as a browser. Precalculus required lots of new material, as compared with the relatively minor tweaking that we did with the advanced placement and business versions of calculus.
This electronic textbook uses Scientific Notebook as a browser and features active computations, plots, and animations. It is offered with a 30 day, six month, one year, or permanent license for Scientific Notebook.