2 x 2 Solve = 48gii Fail
04-24-2014, 03:43 AM
Post: #1
 ndzied1 Member Posts: 115 Joined: Apr 2014
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 :-)
04-24-2014, 05:00 AM
Post: #2
 Steve Keeley Junior Member Posts: 18 Joined: Apr 2014
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"
04-24-2014, 05:23 AM
Post: #3
 Manolo Sobrino Member Posts: 179 Joined: Dec 2013
RE: 2 x 2 Solve = 48gii Fail
04-24-2014, 09:02 AM
Post: #4
 SlideRule Senior Member Posts: 1,394 Joined: Dec 2013
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
04-24-2014, 04:07 PM
Post: #5
 ndzied1 Member Posts: 115 Joined: Apr 2014
RE: 2 x 2 Solve = 48gii Fail
(04-24-2014 05:23 AM)Manolo Sobrino Wrote:  http://www.hpmuseum.org/forum/thread-665.html

Thanks for the link. I had missed that one.
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