tell me what is the difference between the versions?
-83 does everything you might need, and more, but has financial addition to the usual functions for TiAy.
More user-friendly than some other models.
-85, 86 may contain a little more redkoispolzuemyh features and a couple of extra. chips, but, frankly, I never faced with the need to use them. In any case, the school \ university program of any of them will be enough to head, including 83.
The most "sexy" calculators TiAy - is -89 and -92. They have better displays input (a function prittiprint, print a fraction as it is done by hand or in textbooks, making it easier to check the entered and understanding derived; work with symbolic expressions (simplify the expression, if zadash equation, for example, 5x = 2a, the you will be given a solution x = 2a / 5, while the normal calculators can solve it, only interpret "a" as a numeric variable, which must be set).
But best of all -
SpaceTime, which is to yabloosi, vinmo, wines, and coming soon to android. MathStudio.
Post has been editeds300pmu1 - 18.05.12, 19:34