HP Solve Newsletter April 2012 arrived

Dear All,

the April 2012 issue of the HP Solve newsletter arrived ! Have a look here and enjoy 3.36 MB of interesting reading.

A hearty THANKS to Richard Nelson and all the other involved for their great work!

Best regards



Thanks for flagging that, Karl. Now downloaded ready for tonight's commute home!




Hi, all.

I downloaded the articles and went reading the one about RPN evolving. I found the second paragraph somehow conflicting and decided to ask for opinions.

If you press the digit 5 on an RPL calculator the “5” is entered into level 1 of the stack. The same thing happens with a classical RPN calculator. If, however, you then press ENTER the two user interfaces operate differently. The same thing happens with a classical RPN calculator.
Shouldn't it be:
If you press the digit 5 on an RPL calculator the “5” is entered into a command line prior to be entered in level 1 of the stack.
I am not sure if this is what happens in the WP34S, because I do not have one (neither have installed an emulator), but I read it has a 8-level stack, so I cannot be sure about the WP34S being a RPN, a RPL or a midbreed and how does it deal with the stack.


Luiz (Brazil)


WP 34S is good old classical RPN - it behaves in principle like the HP-45 or HP-42S. The only major differences are:

  1. The numeric input is echoed as you type - syntax checking will begin with ENTER or another legal command, not earlier.
  2. WP 34S allows you choosing either 4 or 8 stack levels (X, Y, Z, T, optionally plus A, B, C, D). With 8 stack levels, d will be repeated like t with 4.
I definitively recommend reading the manual here in this matter :-)

WP 34S allows you choosing either 4 or 8 stack levels
Yep, that's what I read about, I myself missed my own thoughts when writing...

Thanks for the link, will read it and get to know it better.


Luiz (Brazil)


Thanks. I just got my copy.

By the way, the article references RPN Tip #4 but does not say which newsletter that's in. Which HPSolve editions are the tips in? Thanks

Edited: 2 May 2012, 12:44 p.m.


Now downloaded ready for tonight's commute home!

Hi James, may I ask what kind of reader do you use to read pdf's like that?

Many thanks in advance, Alex


Hi Alex

An iPad2 - both the iBooks and Kindle app work fine with pdfs. It also means I can check into the Museum as well during the commute as have reasonable 3G coverage along most of the train route.




although I couldn't find the reference to RPN Tip #4 in the April 2012 issue, you find Tip #4 in Volume 4, May 2008 (still available for download here )

Best regards



Found Solve #4. Thanks


Thanks a lot for your kind answer!

Best regards,

Possibly Related Threads...
Thread Author Replies Views Last Post
  XCas / Prime "solve" question Nigel J Dowrick 4 872 11-08-2013, 04:01 AM
Last Post: Nigel J Dowrick
  Using the Prime to solve for eigenvalues Michael de Estrada 28 3,576 10-27-2013, 07:21 AM
Last Post: Tarcisi C
  HP Prime Define: Use with solve, etc. Helge Gabert 0 422 10-23-2013, 06:24 PM
Last Post: Helge Gabert
  HP 34s solve f'(x)=0 Richard Berler 8 1,000 10-07-2013, 03:03 PM
Last Post: Dieter
  Good puzzle for kids to solve on 35s? snaggs 11 1,446 09-18-2013, 10:40 PM
Last Post: David Hayden
  September SOLVE Newsletter Robert Prosperi 4 768 09-07-2013, 01:12 AM
Last Post: Mic
  [HP Prime CAS] Solve Commands (Bugs and Request) CompSystems 10 1,507 08-08-2013, 12:34 PM
Last Post: Gilles Carpentier
  41 SOLVE & INTEG Bank-switched Implementation. Ángel Martin 0 391 06-21-2013, 11:31 AM
Last Post: Ángel Martin
  HP-17bII+ Solve Compatibility Issues Robert Prosperi 7 1,109 04-22-2013, 10:11 PM
Last Post: Gerson W. Barbosa
  WP34S ver 3,2 Arrived from Eric Namir 0 383 04-16-2013, 03:30 PM
Last Post: Namir

Forum Jump: