Oddly enough, students who where succeeding in their university’s precalculus course did not always do well in their calculus courses. Two mathematics professors at the University of Washington decided to ensure that their calculus students were properly prepared. They wrote their own text, with the straightforward title of *Precalculus*. David H. Collingwood and K. David Prince have been using that textbook for their courses since 2003.

The last time I visited their site, their free online precalculus textbook was showing a copyright date of September 2, 2010.

## Chapter Titles in *Precalculus* Online Textbook

- Warming Up
- Imposing Coordinates
- Three Simple Curves
- Linear Modeling
- Functions and Graphs
- Graphical Analysis
- Quadratic Modeling
- Composition
- Inverse Functions
- Exponential Functions
- Exponential Modeling
- Logarithmic Functions
- Three Construction Tools
- Rational Functions
- Measuring and Angle
- Measuring Circular Motion
- The Circular Functions
- Trigonometric Functions
- Sinusoidal Functions
- Inverse Circular Functions

The included link opens up a PDF file, please be patient for it to load.

View this Free Online Material at the source:

Precalculus