Using the term mathematical economics in the broadest possible sense, one may very well say that every elementary textbook of economics today exemplifies mathematical economics insofar as geometrical methods are frequently utilized to derive theoritical results. Conventionally, however, mathematical economics is reserved to describe cases employing mathematical techniques beyond simple geometry, such as matric algebra, differential and integral calculus, differential equations, difference equations, etc. It is the purpose of this book to introduce the reader to the most fundamental aspects of these mathematical methods - those encountered daily in the current economic literature.