## Description of the Rigorous Graphing Applet

The user supplies the following:

**The function ***f(x)*
- Allowed are the four standard arithmetic operations
**+**, **-**,
*****, **/** and the standard functions **sin**, **cos**, **exp**,
**ln**, **sqrt** and **expr^int**, where **expr** is any expression
and **int** is any integer. Numerical constants are either floating
point constants like 3.141, or intervals formed by such constants, for
example [3.141, 3.142].
**x-range**
- The domain over which the function is plotted.
**y-range**
- The visible range of the function.
**Number of Nodes**
- The domain is partitioned in that many subintervals of equal lenght.

## Features

**Root Finder**
- Click once on canvas to find an enclosure for the nearest root. The
numerical value of the root will be displayed, and the root will be marked
on the canvas.
**Range Chooser**
- Click and drag mouse on canvas to choose new ranges.

Last modified by Wolfgang Kühn on
Sunday, 10 October 1999