Barnett, Raymond A. Precalculus. - 6th ed. - Boston; N.Y.: McGraw-Hill, 2008. - xxiv, 1043p.;26cm "N" ISBN: "978-0-07-111319-9" Subjects--Topical Terms: 1. Algebra -graphic methods 2. Trigonometry 3.Functions Subjects--Index Terms: "Y" LC Class. No.: QA331.3 / .B37