[quote name='Over easy']From my college experience, I find that graphing calculators are not a must. It's handy to have one, but not a must. Unless you're going into a major with a lot of math, it's not very likely that you'll use your graphing calculator a lot. In fact, I'm an engineering major. I don't even use my TI-83 much aside from simple calculations that I can do with my TI-36 (mainly because my math professors don't allow calculators in tests).[/quote]
Agreed. I'm a math major and I've made it through 3 1/2 years of college with an 86. Sure the 89 will do most of your calc work for you, but none of my teachers have allowed students to use them on tests. The only class that I can think of where a 89 would have been any more useful than my 86 is multivariate calc. Besides multivaraite functions, symbolic differentiation, and symbolic integration, most other functions that you would need are on the 86 (many are even on the 83). Also, any good math suite like maple, which most schools have, can help a lot more with homework than an 89 can.