text: As a student studying mathematics, I find it very useul! Packed with 3200 terms and 200 illustrations, It's a great quick reference guide. I found things in this guide that I couldn't find in any other book or guide. Another thing about this reference guide is the lack of poor illustrations and examples. Some things this guide helped me with is PARABOLAS, ELLIPSES, HYPERBOLAS, GAMMA FUNTION, ZETA FUNCTION, FEIGENBAUM NUMBER, THE GREEK ALPHABET, and much more. I thank David Nelson and Penguin Books for such excellent work
  