I don't want another physical calculator but thanks for pointing me to Xcas. I haven't heard of it before, I must give it a go. I've been using Mathematica for

I don't want another physical calculator but thanks for pointing me to Xcas. I haven't heard of it before, I must give it a go. I've been using Mathematica for most of my computer algebra tasks, but it's not free. I've dabbled with Maxima and SymPy but neither are as easy to use or as powerful as Mathematica.