2 x 2 Solve = 48gii Fail

04242014, 03:43 AM
Post: #1




2 x 2 Solve = 48gii Fail
In helping my daughter check some homework, I was using a 48gii to solve systems of 2 equations with 2 unknowns.
This one obviously has no solution but the 48gii says it does: \[8x+4y=5 \\ 8x+4y=12\] The 48gii says the answer is \[ \begin{bmatrix} 0.35\\ 0.175 \end{bmatrix} \] Even my 35s says NO SOLUTION :) 

04242014, 05:00 AM
Post: #2




RE: 2 x 2 Solve = 48gii Fail
The 50g gives the same result as the 48 (a 48GX in my case).
My 42S gives a result of [ 8.5E12 1.7E13 ] The Prime, like the 35s, returns "No solutions" 

04242014, 05:23 AM
Post: #3




RE: 2 x 2 Solve = 48gii Fail  
04242014, 09:02 AM
Post: #4




RE: 2 x 2 Solve = 48gii Fail
Maybe stating the obvious  BUT 
NO Solution is interpreted as no Intersection solution as they are Parallel Lines. SlideRule 

04242014, 04:07 PM
Post: #5




RE: 2 x 2 Solve = 48gii Fail
(04242014 05:23 AM)Manolo Sobrino Wrote: http://www.hpmuseum.org/forum/thread665.html Thanks for the link. I had missed that one. 

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