Comment by Merad

I had a TI-83 in high school and upgraded to a TI-89 for college circa 2002. Used the heck out of those calculators because I did all the math and physics prerequisites for an engineering degree before switching to CS. It also helped me get a B in Linear Algebra thanks to holding a cheat sheet document for the final exam. I had no trouble with the likes of Calculus 3 and differential equations but for some reason the later material in linear algebra didn't click with me.