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At least back in the Stone Age, the TI-84 is for engineering. They made another one that did matrices for business students. The teacher didn’t care that the

by pbj1968 2y ago

At least back in the Stone Age, the TI-84 is for engineering. They made another one that did matrices for business students. The teacher didn’t care that the TI-84 had software that could simulate the matrix functions. By god, TI mailed her a free TI—86 and that’s what we were using. Google says now they’ve all got a matrix button, so that’s nice. Casios were leagues ahead, tho.

epcoa 2y ago
The TI-84 came out in 2004 which I have a hard time calling Stone Age for anything calculator related, graphing or otherwise. But if you were born in 2000 or so perhaps it feels that way. This is also getting well past the time calculators were marketed heavily outside the education market anyway. Also the 84 really is an enhanced 83 which is solidly targeted as a secondary education machine. TI would even sell them etched with “School Property” https://brownmath.com/ti83/diff8384.htm#Catalog https://brownmath.com/ti83/diff8384.htm#Catalog In the Stone Age of graphing calculators (80s-90s), HP was dominant in engineering disciplines (and France). Now I think maybe you’re confusing with the TI-85 (but the TI-86 was a TI-85 replacement and handles matrices just fine and superior to the 84) - so then perhaps your teacher had a TI-83. That would be more plausible and sensible.
- pbj1968 2y ago
  It was a Ti-83 vs Ti-85.
- aidenn0 2y ago
  The first two models were TI-81 and 85. According to my math teacher, it was the years the team lead graduated high school and college, so they were the HS and college level calculators.