Matlab sucks!
Or http://www.sagemath.org/ or just python with scipy. - Matt Leifer
I'll second the SciPy recommendation. For visualization, matplotlib (http://matplotlib.sourceforge.net/) works really well. - Chris Granade
No, no... you're just not buying the right add-ons... :) - Egon Willighagen
It's the seemingly random crashes that drive me up the wall! Why is it doing this to me? Why Matlab?why? - Jan Wessnitzer