The website and mobile app provide worked-out solutions to all odd-numbered problems. Free live tutoring is available at CalcChat.com on Sunday through Thursday from 4:00 PM to 12:00 AM ET during the school year and Monday through Friday from 1:00 to 4:00 PM ET in the summer.
LarsonPrecalculus.com is a free website that offers multiple tools and resources for students, including interactive examples, Instructor Videos, data downloads, and more.
Some of the many features include side-by-side examples, How Do You See It? exercises, projects, and a wide range of applications.