The answers to exercises & problems, are sold only to actual teachers in employement. I handled a copy of the book; most beautiful on acid free, glossy paper. A first revision of it, would be much appreciated. Very easy to read and understand, illustrated, book of math that is worthy of being chosen by decisions Makers for high school (as an advanced optional three credit course) or first year college in fall quadrimester. The prerequisites of any academic first course in linear algebra taught in North America, are 1) all the math offered at primary & secondary schools, 2) a course in physical sciences and 3) a course in physics at high school. Sheldon Axler has to be mentionned first, endeed. _____ For the rare pupils who have benefited from a non conventional but geometric approach to trigonometry (where tan, cotan, sec^2, cos^2 etc correspond to specific segments of lines, may I suggest Linea Algebra, by Harold M. Edwards (with all the answers and often with full procedure; but not illustrated)?