Question about HP 49G Solver  Printable Version + HP Forums (https://archived.hpcalc.org/museumforum) + Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum1.html) + Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum2.html) + Thread: Question about HP 49G Solver (/thread50442.html) 
Question about HP 49G Solver  Felix  01202004 Is there a way to have the solver of an HP49G work similar to that of the HP48SX. I mean removing the menus and having working using the function buttons at the bottom of the screen. My problem is that my results are long numbers that do not fit in the default variable fields of the HP 49G. Also, in the HP49G where are the undo and the last stack funtions of the HP 48SX? Thanks
Edited: 20 Jan 2004, 10:05 a.m.
Re: Question about HP 49G Solver  VPN  01202004 Q:"Is there a way to have the solver of an HP49G work similar to that of the HP48SX. I mean removing the menus and having working using the function buttons at the bottom of the screen. Re: Question about HP 49G Solver  Felix  01212004 [RS] & 7 = menu. Then I select option [1] and get the HP Eq. Solver. Is there a way to run the EQ. Solver without the variable menu. Say in a way similar to the HP 49S? The reason are:
1) I think it runs faster Thanks in advance.
Felix
Re: Question about HP 49G Solver  Karl Schneider  01222004 Felix  Try ROOT, e.g.,
RAD
Answer of 6.30152 is returned in "radians" angular mode.
Followup: RPN "SOLVE" vs. RPL "ROOT"  Karl Schneider  01252004 This is a followup to an answer I posted to Felix' question about how to utilize the rootfinding solver on the 49G using only stack arguments, not menus. My answer: Felix  Try ROOT, e.g.,
RAD Answer of 6.30152 is returned in "radians" angular mode.
On earlier RPN machines, the variable to be solved is taken from the xregister at the beginning of the function, so both initial guesses are put onto the stack in the x and yregisters. ROOT seems to have lost one refinement from SOLVE  if no root is found in SOLVE, an error message is given. However, if no root is found by ROOT, it just blithely returns the closest answer it could find, without any message. (Is there a "solve failed" flag I don't know about? The equation I gave has the following points of interest:
x f(x) remark On all units, guesspairs to the left of the local max will cause ROOT/SOLVE to stop at the local min. The 15C gives "Error 8"; the 41C Advantage gives "NO"; the 32Sii gives "NO ROOT FND"; the 42S says "Extremum". ROOT on the 28C/48G/49G give no such disclaimers. ROOT/SOLVE tend to find the first root with guesses to the right of the local max, although ROOT is more likely to find higher roots with guesses near the flat area around the local max.
Any insights?
Re: Question about HP 49G Solver  Francesc Casanellas  02022004 A little late, I would give you a way to solve equations in the HP49 using the soft keys. This is more practical as the display is free for intermediate calcualtions and results are diplayed in the set format.
1. Store the equation in 'EQ':
2. Select the solver menu:
If you use the solver often it is very convenient to put the following small program inb the Home directory:
If you call it SOL, as an example the program to calculate the impedance of a capacitor or an inductor would look like this:
Re: Question about HP 49G Solver  salvador  02132004 como utilizar la intstruccion "RKFStep"
