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+--- Thread: HP 15C Quadratic Equation II (/thread-26348.html)
HP 15C Quadratic Equation II - jb - 01-18-2003
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.
Re: HP 15C Quadratic Equation II - R Lion (Spain) - 01-18-2003
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
Re: HP 15C Quadratic Equation II - jb - 01-18-2003
Ho Ho! I knew it was something simple like that. Thank you for your quick response.