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The TI-89 series' CAS is really impressive, particularly since it was released over 20 years ago with automatic equation formatting and a powerful unit subsyste
by Robotbeat 7y ago
The TI-89 series' CAS is really impressive, particularly since it was released over 20 years ago with automatic equation formatting and a powerful unit subsystem.
The price of this is worth it for the software alone.
- frostburg 7y agoYeah, it's basically the one from the TI-92 from 1995. I have a TI-89ti, but the contemporary HP 50g was better in some ways.
- scottlocklin 7y agoIt was/is amazing, and was actually released 31 years ago! https://en.wikipedia.org/wiki/Derive_(computer_algebra_system) https://en.wikipedia.org/wiki/Derive_(computer_algebra_syste... I used it as a DOS program well up into the late 90s on my HP200lx... One of the badass things about it, afaik, hasn't been reproduced in any CAS: the quasi-ncurses looking menu made it easy to use on limited hardware and you didn't have to waste time looking things up. I occasionally consider buying one of the TI calculators just to fool around with it again.
- alanbernstein 7y agoIt's still my favorite CAS for unit conversions, simple equation solving, checking integrals and derivatives. Part of that is surely the muscle memory of the buttons from using it daily for 6 years, most of that before I even had a phone. Now I have an emulator with a ti89 ROM on my phone. Best offline calculator app available.