Attached is a simple worksheet showing how M14 might handle the dell operator in use.
You will find Tom's worksheet far more complete than this one, and contains many comments explaining what he does. Great tutorial on the subject as it applies to using Mathcad.
It is taking several minutes to run the whole of Tom's worksheet, so it is a good idea to fire it up when you have some time to do some serious browsing.
Tom's worksheet has an advantage over the M14 version with the dell operator in that it works for earlier versions. However, the examples in the attached worksheet are pretty simple to implement, if that is all you need.
...and Tom, you might put version numbers on your regularly posted worksheets. They are a great source of info, and it would be useful to know what the latest version is...
Rich
http://www.downeastengineering.com/