Layout Below is a typical example of a java applet. To start it, click on the "Demo" button. This should load two separate windows. The first window is called the control panel and it contains the definition of the function, f(t), as well as the interval for t over which f is to be graphed. The second window is a graph window. In this case we have a 2D graph window which shows the x- and y-coordinate axes and the graph of f(t) over the stated interval. The saved function for this demo is f(t) = t^2 with -1≤t≤1, but both the function and the interval may be changed in the control panel. When typing a function into the control panel you must use the following conventions: - Type   /   for division - Type   ^   for exponentiation - Type   *   for multiplication So, for instance, the expression "12x^2" would produce an error because of the missing multiplication symbol. The correct expression would be "12*x^2". Also keep in mind that program uses order of operations and that there is a set of built-in functions Here is another example of a java applet: In this demo, we again have a control panel window and a graph window. In the control panel, four points have been defined in terms of their Cartesian coordinates. By default, the given points are the four vertices of a regular tetrahedron. These points are plotted in the 3D graph window along with the corresponding faces of the tetrahedron. Again, the points may be changed in the control panel. In general, loading a java applet demo will bring up a control panel window and one or more graph windows. The control panel will contain all definitions of functions, intervals, variables, and expressions used in the demo. A graph window will be either a 2D graph or a 3D graph.