HP 15C Quadratic Equation II



#4

Sirs,

I have having a deuce of a problem getting the 15C Quadratic Equation II program to work (http://www.hpmuseum.org/software/15quad2.htm). I have tried reloading and rerunning it multiple times but must be doing something fundamentally wrong.

For the equation: x^2 – 3x – 10 = 0, x should equal 5, -2.

I put 1 on the stack and hit enter, -3 on the stack and hit enter, –10 on the stack and hit enter, then hit GSB 0, it gives an answer something like –1.67 and –3.

What do you think I am doing wrong?

Thank you.


#5

If you press ENTER before the last number, then this is the stack:

T: 1

Z: -3

Y: -10

X: -10

and this is not wich the prg needs, and it should give error 0 in this case. Symply do: 1 enter -3 enter -10 GSB 0

Raul


#6

Ho Ho! I knew it was something simple like that. Thank you for your quick response.


Possibly Related Threads...
Thread Author Replies Views Last Post
  The HP Prime saga - Part II Michael de Estrada 21 1,237 11-30-2013, 01:04 PM
Last Post: Michael de Estrada
  Equation Library/App for the Prime Harold A Climer 3 346 10-30-2013, 10:14 AM
Last Post: CompSystems
  Equation Library on the PRIME Harold A Climer 0 200 10-26-2013, 10:01 AM
Last Post: Harold A Climer
  Meltiple Equation Solver PRIME Vs. HP 50G Harold A Climer 5 412 10-07-2013, 05:11 PM
Last Post: CR Haeger
  EOT--TI N-Spire Equation Limit Matt Agajanian 2 277 09-22-2013, 12:37 PM
Last Post: Matt Agajanian
  Does Prime Have a Multiple Equation Solver? Norman Dziedzic 2 253 09-20-2013, 09:43 AM
Last Post: Norman Dziedzic
  Equation of the parabola given three points Gerson W. Barbosa 27 1,416 09-18-2013, 01:58 PM
Last Post: Gerson W. Barbosa
  Quadratic & Cubic Regression RPN progs Matt Agajanian 9 600 09-17-2013, 11:37 AM
Last Post: Jeff O.
  HP-32S II Expansion Matt Agajanian 14 989 07-21-2013, 10:19 PM
Last Post: Matt Agajanian
  Classpad II fx-CP400 emulator Namir 0 240 07-07-2013, 08:07 AM
Last Post: Namir

Forum Jump: