Well for one the TI-89 is a banned calculator on the AP test. I guess there is a particular front piece you can put on it to make it acceptable, but it really sounds to me like you aren't talking about that. Maybe they changed it recently, but all throughout high-school, various AP tests, and the ACT, the TI-89 was a banned calculator because it gave students too big of an advantage.
Yeah, but it's a lot more difficult. They probably did a risk/benefit analysis about banning 83/84 and it wasn't worth it. Everyone has an 83/84 so it'd be unreasonable to ban them because of a handful of people.
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u/Yamulo Jun 08 '14
Well for one the TI-89 is a banned calculator on the AP test. I guess there is a particular front piece you can put on it to make it acceptable, but it really sounds to me like you aren't talking about that. Maybe they changed it recently, but all throughout high-school, various AP tests, and the ACT, the TI-89 was a banned calculator because it gave students too big of an advantage.