DESCRIPTION
In this lecture, we concentrate on linear and nonlinear system simulations, where simple programs or spreadsheets may be used to simulate linear and nonlinear systems. We will investigate a process known as Delta t, or Dt, which allows the simulation of most processes using numerical integration. Instead of using complex algorithms or tricks to save computing time, the Dt process uses basic differential equations where the work is performed by your microcomputer or PC. We will see that using this process, the inherent accuracy and resolution of spreadsheets provide very accurate simulations.

PREREQUISITES
The prerequisites for this lecture are a limited basic knowledge of calculus and physics.