Re: 42S: use of VARMENU ? Message #5 Posted by Karl Schneider on 6 Nov 2006, 11:56 p.m., in response to message #1 by Curtis Cameron
Greetings, Curtis --
Quote:
I see that the solver can use the MVAR command, which I understand, but one program I found has the VARMENU command, but I can't tell what it does. I guess it goes without saying that I don't have the manual.
VARMENU "PROG" displays a menu of variables defined with MVAR immediately following the external label "PROG". (The SOLVE and INTEG functions essentially do an automatic VARMENU.)
Quote:
Also, is there a simple way to have a solver program to show the same basic value of something in three (or more) different units?
Hmm, it becomes difficult using an equation of three or more variables when solving for one variable based on another, because all the "uninvolved" variables would need to be zeroed out. I don't see a simple solution.
In addition to VARMENU, there is also the Programmable Menu, described on pp. 145-148 of the HP-42S Owner's Manual (a scan of which can be purchased for a nominal price on CD or DVD from the MoHPC website).
I've written an application program for the HP-42S that utilizes both VARMENU and the Programmable Menu. I use the program occasionally, but don't plan to distribute it. The application program is just too complicated, not fully intuitive, and hard to document. There are better platforms for such an application than the HP-42S.
-- KS
Edited: 7 Nov 2006, 12:02 a.m.
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