We are pleased to announce the release of Quadratic Solver 1.0. You can see more information on the product page.

Quadratic solver plots, and displays the solution to the quadratic polynomial equation. It can handle real and complex types of solution, and so displays the full complex number solution rather than just display an error message saying the solution is complex!

You can also see a HD video demo of Quadratic Solver on our YouTube page.

Let us know what you think!

Microsoft Excel is such a flexible and powerful tool that you can use in all manner of situations. Below, is a screen shot of an Excel spreadsheet application we have developed that encapsulates the quadratic equation. It plots the quadratic graph over a specified range, and displays the chart data. The coefficient input for the quadratic is entered by the user and also displayed. Then, immediately after the user has entered the coefficient data, the graph updates and the solutions for the quadratic equation are calculated and shown in spreadsheet cells B6, and C6. There is also a button control on the spreadsheet to take you to the developers home page which, in this case, is us, at gwycon.com!

Quadratic equation spreadsheet. Layout of controls, data, and chart.

As mentioned above, whenever the spreadsheet updates automatically the quadratic equation solutions are calculated immediately and displayed to the user. This happens by means of a custom programmed spreadsheet function to calculate the solutions to a quadratic equation. If the solutions turn out to be complex, the function returns the string “Err!”. continue

Polynomial Explorer is an application developed in C# using Visual Studio 2008. It was written to graph and display a polynomial equation with terms included up to the 6th degree (x⁶). Any combination of terms can be displayed and each term is controlled by a slider to alter a terms coefficient value. The user interface has been designed so that the equation is displayed clearly and the terms can be altered in an intuitive method via the slider controls. continue

Here is an implementation of a trigonometric function, plotted as a 2D graph. Interactive controls are available to alter the graph dynamically. The sine wave plotted incorporates parameters commonly used in physics. You can directly control the amplitude (A), phase (phi), and the angular frequency (k).

Try it now! Click on the slider bars in the Flash example above to change the sine waves properties.

There are also some basic graph options that can be set via check boxes, these can be toggled on/off. Finally, there is a useful function that is a good thing to have in any application, and that is a reset button. This simply resets the graph back to the state when first loaded. This example is coded using ActionScript 2.0.

Extending this example to graph any function is fairly straight forward and could handle some quite complex equations with multiple parameters. The range of each axis would have to be carefully rendered though to make sure the graph ‘zoom’ was correctly set, otherwise the graph may not display correctly.