This introduction provides a brief overview of the contents of the book, briefly
describing the focus of each chapter.
Chapter 2 introduces matrices and the corresponding linear algebra. A matrix
is a rectangular array of numbers, which may be used to succinctly represent
sets of equations, network connections, evolutionary dynamic systems and so on.
Manipulation of matrices becomes essential to the efficient study of large systems.
The following example illustrates the benefit of matrices whenmoving from single
equation problems to systems of equations.