I was wondering if programs written for a ti-89 would work on either a ti-nspire cx or a ti-nspire cx cas? I downloaded this physics program that has many physics formulas and can solve for them. I was hoping to keep using it. I have the program for a ti 83, ti 84 plus, and ti 89. Would any of these work? If not, is there something I can do so that they will?