Using equation solver multiple times on HP35s.. - Printable Version +- HP Forums ( https://archived.hpcalc.org/museumforum)+-- Forum: HP Museum Forums ( https://archived.hpcalc.org/museumforum/forum-1.html)+--- Forum: Old HP Forum Archives ( https://archived.hpcalc.org/museumforum/forum-2.html)+--- Thread: Using equation solver multiple times on HP35s.. ( /thread-132435.html) |

Using equation solver multiple times on HP35s.. - ravwalia - 02-07-2008
Re: Using equation solver multiple times on HP35s.. - designnut - 02-07-2008
See section 6 in your instructions, you can write and keeep all the equations you wish. Sam
Re: Using equation solver multiple times on HP35s.. - Chuck - 02-07-2008
You are correct: to solve the same equation a second time you need to enter the EQN list for your desired equation; right-shift SOLVE; and your variable. I don't know of a short-cut to begin the process all over again.
CHUCK
Re: Using equation solver multiple times on HP35s.. - designnut - 02-08-2008
I didn't know that you could use equations within a program, they complete actions easier than if you had programmed the individual actions as program steps. I entered and rearranged RECT<>POLAR programs By Jeff O and called subroutines. It was good initial practice in getting a kinesthetic sense of where keys were located and getting hands on practice and learning to find and correct mistakes, what worked and what didn't. I recommend it. His original program is: http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv017.cgi?read=122519#122519 Re: Using equation solver multiple times on HP35s.. - ravwalia - 02-08-2008
Hello Guys, Re: Using equation solver multiple times on HP35s.. - Martin Pinckney - 02-08-2008
Quote:That's one of the reasons I lost interest in the 35s, because the solver is essential to my calculator use. My 27s and 17b make it very easy to do repeat solves. Even with the lowly 22s it is easier to do this than with the 35s. Re: Using equation solver multiple times on HP35s.. - Jeff Kearns - 02-08-2008
Guys, Another option is to simply write a program for this equation, and set FN equal to whatever the label of the program is. You can use SOLVE (VAR) repeatedly thereafter.
Jeff Kearns
Re: Using equation solver multiple times on HP35s.. - designnut - 02-08-2008
You may type any equation you want, as many as you want using EQN. You may use cursors to scroll through equations to the one you want. Anytime that equation is shown you can use SOLVE_ to solve for whatever variable you want. Key the desired variable, and it will prompt you for the missing values. If you have them stored it shows that value, if correct R/S, otherwise key in the correction. |