Theres a whole lotta spoofin goin on.

You might find the following reference book handy if you do engineering work.

Engineering Mathematics Handbook :
Definitions / Theorems / Formulas / Tables
Second Edition
By Jan J. Tuma
McGraw-Hill Book Company copyright 1979
ISBN 0-07-065429-8

A later edition would probably be better, but I never saw the need to upgrade.

Lonnie Courtney Clay