This applet uses SWING components. If it does not work, try using a different browser. Internet Explorer works if you install the Java plugin. Get it from the Sun Microsystems Java Plugin page
Enter a value in the "k=" box and press the [Enter] key to see a change in the graph.
Click the Slider then use the LEFT and RIGHT arrow keys on your keyboard to adjust the slider. The slider is set at 6.280 (about 2*pi) and changes in increments of 0.001.
Funny graph! Here's the source code !