How are you going to use them chris ? They are pretty specific to the company involved.
What you have could be a "Black Box". If you let the user enter the equations, say into a Dynamic text box, then it would work for anyone. I wonder if flash can be used for a palm pilot. That way you could sell to contractors and I am sure there are standard equations that all contractors use. Just wondering.
Any programming language is at its best before it is implemented and used.