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Strange behavior solver app - Printable Version

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Strange behavior solver app - tecnovelez - 07-01-2016 10:59 AM

Good morning everyone.

Playing with my hp prime, in solve app I tried with the example from the user manual,

EQ1: X-Y=-1
EQ2: (X^2)+(Y^2)=16

As you can see in the image, solve doesn´t works for this two equations on my HP Prime.

But, the behavior is correct for each of the equations alone.

However, and as it is logical, the behavior in the pc simulator and with android app, for the same operation is correct.

Please, can anyone check with the same equationes on your hp prime.

Thanks.[attachment=3702][attachment=3703]

RE: Strange behavior solver app - Aries - 07-01-2016 12:34 PM

No error here (fw: 10077) !
Try resetting the memory and restarting the calculator.
Best,

Aries ;-)

[Image: th_375875920_syssol1_122_396lo.jpg]

[Image: th_376006178_syssol2_122_21lo.jpg]

RE: Strange behavior solver app - tecnovelez - 07-01-2016 12:44 PM

(07-01-2016 12:34 PM)Aries Wrote:  No error here (fw: 10077) !
Try resetting the memory and restarting the calculator.
Best,

Aries ;-)

Thanks a lot for your help Aries.

Same fw, and this morning also repeated the test again after installing the fw and the bad behavior continues.

RE: Strange behavior solver app - roadrunner - 07-01-2016 05:20 PM

In fw 10077 the solve app is broken. Check out:

http://www.hpmuseum.org/forum/thread-6208.html

for an explanation.

In the meantime, in CAS, approx(fsolve([E1,E2],[X,Y])) will return the correct answer:

[[2.28388218142,3.28388218141],[−3.28388218141,−2.28388218142]]

-road

RE: Strange behavior solver app - tecnovelez - 07-01-2016 06:02 PM

(07-01-2016 05:20 PM)roadrunner Wrote:  In fw 10077 the solve app is broken. Check out:

http://www.hpmuseum.org/forum/thread-6208.html

for an explanation.

In the meantime, in CAS, approx(fsolve([E1,E2],[X,Y])) will return the correct answer:

[[2.28388218142,3.28388218141],[−3.28388218141,−2.28388218142]]

-road

Thank you very much roadrunner.

As a regular reader of this forum, knew that thread, however yesterday when I discovered the error, I was not able to remember that thread.

Besides grateful for your help, I would like to apologize for not having used the forum search engine.