Activate Polar Mode in GraphCalc HD 9
If you have need of a fully featured graphic calculator on your TouchPad, GraphCalc HD by Squeaky Dog Software is a good choice for you. In addition to the standard functions of a graphic calculator, it also allows you to activate a "polar mode" for additional functionality. If you already comfortable with using a graphic calculator, you may know what Polar Mode is. If terms like "graphing calculator" and "polar mode" seem foreign to you, then this tip may not be for you. In fact, this tip author also had no idea what "polar mode" was, so I will let the app's author explain it in our geekiest-tip yet!
We general learn about graphing function where y is determined based on changing x, like y=x^2, and plotting the point (x,y). But in polar mode, the graph is produced by changing theta and computing r. Polar coordinates are in the form (r, theta), where r is the distance from the origin (called the "pole" in polar graphing) and theta is the angle from the due east line. In GraphCalc, graphing r=3 for instance, would graph a circle of radius 3, but a lot more interesting graphs can be produced by introducing trigonometric functions. Here is a link to some fun examples for you
So there you have it. If you have need for an advanced graphic calculator with a "Polar Mode" option, GraphCalc HD is for you. You can also give GraphCalc a try, also by Squeaky Dog Software. It's a free app but only allows the user to graph 2 functions (vs 9 in the HD version) and doesn't let you edit the previous entry or any of the functions (you have to retype everything).
GraphCalc HD is available in the webOS App Catalog for $0.99 and is compatible with all webOS devices running webOS 3.0 or higher