LAST on HP20S

[rprosperi]

(07-08-2016 03:54 PM)jbhp55 Wrote:  I think we can conclude that the use of LAST on the HP20S is subject to an unnecessarily complex set of rules. Unless used in exactly the intended way, the result may be surprising.

I don't agree that it's unnecessarily complex, it just takes research to understand it's full scope. You should search here on the forum archives, I'm sure someone has done this a documented it in a way that will help to better grasp just what is does, when, and how.

I think most commands will give you surprising results if not used in exactly the way intended, the difference is some have less subtle effects than LAST.

(07-08-2016 03:54 PM)jbhp55 Wrote:  I think it would be much easier to understand if it would just retain the last value displayed as a result. I had a Casio which had an 'ANS' key which worked like that.

With no disrespect intended, I think the problem you are having is that you want to use LAST the way ANS worked, and it just doesn't work the same way.

But again, RPN/RPL avoids all this, so that's probably the best answer. Thanks for a good reason to take out my 20S.