The MATLAB package itself is the numerical toolbox. We will make some general remarks and treat some important commands. Look at the help information of all commands mentioned.
The number of digits of numbers that are displayed on the screen can be changed with the commands format long or format short. The calculations themselves do not change. Internally, MATLAB performs calculations with 16 decimal points.
In this chapter, we are going to investigate the function $ f(x) = x^3-x^2 -3\arctan(x)+1$ on the interval [-2,3]. In what follows we will assume that an function m-file of the function is available.

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Esteur 2010-03-22