Hi,
I would certainly upgrade my choice to the FX-991ES. It can do (numerical) integrals, derivatives, it has 40 physical constants (instead of 8). It can do unit conversions, and the Natural display is a real pleasure.
Don't get me wrong, I am no TI calculator basher. I have just bought the TiNspire, AND TINspire CAS. I have a TI92, a TI83, Ti BA 35Solar.
If you do become an engineer, the calculators you might want to use (not during the exams) are the TI 89 Titanium, HP49G+/HP50G, the Casio ClassPad 330. You see I recommend the TI89 Titanium because there is a wealth of Engineering programs written for it.
Hope it makes your decision easier.
Comments:
Nov 08, 2009
- The manual for my FX-991ES is also the manual for the FX-115ES. I guess they are identical.