If you want top grades and thorough understanding of precalculus, this powerful study tool is the best tutor you can have! It takes you step-by-step through the subject and gives you more than 600 accompanying related problems with fully worked solutions. You also get plenty of practice problems to do on your own, working at your own speed. (Answers provided to show you how you're doing.) Famous for their clarity, wealth of illustrations and examples, and lack of dreary minutiae, Schaum's Outlines have sold more than 30 million copies worldwideand this guide will show you why!
I would recommend this book for someone who has already been through Algebra, Linear Algebra, and Geometry and don't need explanations for anything but want some problem practice. Even then I hope that they have some inkling as to HOW to solve these problems because even though they are solved, the author only gives you the bare minimum of the steps.
It is not a book to be used on its own at all, however if you want to have easy access to the formulas and stuff like that this is a great reference to have.
An absolutely useless book whose clearest writing appears on the back cover copy. This wasn't even worth the effort to return to Amazon. But it makes a decent doorstop.