James Stewart's Precalculus is a popular textbook for precalculus courses, and the 6th edition is widely used. The book covers various topics, including functions, graphs, trigonometry, and analytical geometry, among others.

: Many academic institutions host the full textbook and selected solutions for their students. For example, the Universidad Nacional de Quilmes (UNQ) and U-Cursos provide digital versions that are useful for cross-referencing exercises.