|Re: Primary key: x^2 or Square root|
Message #3 Posted by Brad Davis on 30 July 2007, 12:38 p.m.,
in response to message #2 by Gene Wright
Well, we'll all have our opinions, of course. I'm sure the team looked at lots of different options. I am happy overall--just never understood this one little detail. Of course, other users undoubtedly use their wonderful calculators somewhat differently.
My take on it: I think I use x^2 about as often as sqrt(x), so I like both as first functions. In this case, I think X should've remained an alpha function and x^2 should go there. Having X as a first function only helps for writing equations faster. I speculate that I'm typical in that I probably spend 10x more time punching through equations than programming equations.
Other candidates for second functions to make room for x^2: I use x^2 probably >10x more often than EEX and a little more often than 1/x and x^y. I rarely use SPC and SYMB. I speculate, of course, that I'm more typical than folks who make big time use of those.
I could be wrong, though--would be far from the first time.
Maybe a future model will allow the user to change the functions.
I never use my calculator for programming or plotting (I have Mathcad and Matlab for that), so its primary purpose is punching through big nasty equations. Of course RPL is ideal for that. I use integrals sometimes during virtual work calcs, but that's about it. Of course, this completely skews my perspective. I speculate that many others use them similarly.
BTW, I've been using RPN/RPL for 16 years and I'd never thought of duplicating and hitting X again--DUH!! Thanks for mentioning that. I'll just start doing that. It's two keystrokes, but two very fast and convenient ones!
Edited: 30 July 2007, 12:47 p.m. after one or more responses were posted