As I refresh my memory, it seems that the Simplex method may be an algorithm to take a look at. Here's an online Java program that solves equations up to 7 variables, and code is available to review.

http://www-fp.mcs.anl.gov/otc/Guide/CaseStudies/simplex/index.html

Jay

>I'm building an application for optimizing the feeding strategy for cattle. The system will determine which feeds to use based on nutritional parameters and some other constraints like maximum number of feeds.
>
>I hope this is what you mean by 'types of operations'.
>
>Martin
>
>>Martin --
>>
>> I'll have to check at home tonite. Can you give me a sense of the types of operations you'll want to use?
>>
>> Jay
>>