HP 39gs vs HP 50g

[rprosperi]

(02-01-2017 03:07 AM)Han Wrote:  Even for educational use, the 50G is a much better choice in my opinion. It also has an algebraic mode that makes it behave like other graphing calculators that have similar capabilities. So if you are unsure about RPN notation, don't let that bother you (you can switch between algebraic mode and RPN/RPL mode very easily through the mode menu). This way you can learn the much more efficient RPN entry method at your own pace.

If the school system does not care or specify which model machine to use, I agree with Han, the 50g is still a better machine (as it can easily use both Alg and RPN/RPL), however many school systems essentially mandate use of Algebraic-only machines, and virtually always teach methods using only Algebraic notation and techniques, in some cases including the 39gs. In these cases, the 39gs is the better choice, as it's optimized for doing exactly this.

The Prime is in a whole different class, clearly superior in almost every way to these other choices (RPN being a significant exception) but I did not want to wander out of the options the OP inquired about. Once it's more clear what he wants to use the machine for, it will be easier to steer towards the better choice.