While at it, let me just say that I’ve become a big fan of Desmos (https://www.desmos.com/ https://www.desmos.com/). I’m in no way affiliated with them, just a

While at it, let me just say that I’ve become a big fan of Desmos (https://www.desmos.com/ https://www.desmos.com/). I’m in no way affiliated with them, just a happy casual user.