47 years ago the author of this book taught me, as a Physics undergraduate student, the contents of this book. I remember his magic eraser more than the contents of the book. In 1972 the hardback edition cost me about the same price as this paperback, so this is quite a bargain. It is a good, solid basis for understanding the math involved. I took math course the same term, covered the same material, and failed in the Math department, while I got a B in from the Physics department.