I need a computer program I can use for studying chaotic systems. I should be more particular. I need something for drawing bifurcation diagrams or whatever one does in an introductory chaos and non-linear dynamics class. Here is a link to the text being used : https://www.amazon.com/Chaos-Kathleen-T-Alligood/dp/0387946772 I suppose I'll be covering chapters 1-7 or something along those lines. I know of two programs - Matlab and Mathematica. Having never worked with either of this seriously before, (I've tinkered around with Mathematica) I was wondering how I'd go about doing the computations required by me. I checked the previous threads on these topics, but they were 'old'. At the rate at which computer software is growing, a thread from a year back is history. There might have been a billion changes to both programs. I also see that both programs are phenomenally expensive. If you guys have suggestions for any alternative programs that might do the trick, please recommend.