HP 50g can't solve system of equations

[Alchemisst]

I tried to solve system of equations through HP 50g it displays infinitely result.How can I solve it on my 50g.On prime it gives solutions.

[rawi]

It seems to be a question of the initial guesses you put in. If I put in [0,0] I get the same error message as you got. If I put in [1.,1.] or [1.,-1.] I get the solution [3.5811, -0.5811].

[Alchemisst]

Yes but on hp 50g we get only two solutions

[rawi]

Yes, that's true, you get only one solution for [x,y] if you call MSLV once. From the manual p. 3-152 about the MSLV function: "Numerically approximates a solution to a system of equations. Searches for a solution accurate to 12 digits, regardless of the display setting."
So this function always stops if one solution is found and this solution depends on the input you give. If your input is [8.,-5.] you get [8.5029,-5.5029] as a solution. So if you want more than one solution you have to put in different intitial guesses.
This function in the HP 50g was rather new. I have a HP 49g which has basically the same functionality but does not have the MSLV command.

[ijabbott]

(04-29-2023 03:09 PM)rawi Wrote:  This function in the HP 50g was rather new. I have a HP 49g which has basically the same functionality but does not have the MSLV command.

It is possible to update it to ROM 2.10 though (at least unofficially) which does include MSLV.

[Alchemisst]

Is there a function on HP 50g which can provide a list of solutions to this system except MSLV,it would be cumbersome to try many initial guesses and sometimes there are many solutions.

[gor1060]

(04-29-2023 11:30 PM)Alchemisst Wrote:  Is there a function on HP 50g which can provide a list of solutions ...

You may wrote simple programm for it such this one
   
   
After few minutes on emu48 you get

  sols.BMP (Size: 155.44 KB / Downloads: 17)

[Alchemisst]

Thankyou

[Alchemisst]

(04-30-2023 11:29 AM)gor1060 Wrote:  

(04-29-2023 11:30 PM)Alchemisst Wrote:  Is there a function on HP 50g which can provide a list of solutions ...

You may wrote simple programm for it such this one


After few minutes on emu48 you get

Can you provide a similar one for the prime

[gor1060]

No, I can't, but you can wrote it himself.