I need to find and download one of the free numerical-analysis- software, to solve blocks of non-linear algebraic equations. None of the sites I've researched gives any idea of how difficult or easy any of these systems are to actually use. I'm hoping that some of you have experience with one or more of these softwares and can help me out.
Ie: Once set up, are they straightforward to use or do I need to have a genius programmer/hacker at my elbow to continually stay my hand from hideous error and blowing up the program?!
I've studied some general articles on the net. Wikipedia has