Custom Function for roots of quartic equations 1

[IDS]

I've just posted this in the VB forum in response to a specific query, but it's probably more appropriate here. I've just finished some custom functions to find the real and complex roots of quartic equations, also cubics and quadratics.

Anyone interested can download from:

http://www.interactiveds.com.au/software.html

The file should be self explanatory, but if not please ask.

It's open source, any comments on the code are welcome.

Doug Jenkins
Interactive Design Services

http://www.interactiveds.com.au

dougjenkins@interactiveds.com.au