Argument error ti nspire

SOURCE: Solving matrix

Go to your matrix button and enter a "3x4" matrix.

Then enter it as follows:

-3 4 5 7
4 3 2 9
-5 5 3 -10

Then exit out and go to "2nd->matrix->math->rref(". Then press enter.

Your screen should look like this:

rref(

Then go to matrix and select your 3x4 matrix, press enter and close it with a parathesis. Your screen should look like this:

rref([A])

Press enter and the screen should say this:

1 0 0 2
0 1 0 -3
0 0 1 5

So,
x=3
y=-3
z=5

Hope this cleared up the confusion!

SJ_Sharks

SOURCE: I downgraded my TI-Nspire's OS

I had this same problem myself and I had to look everywhere to find a solution. You will have to remove the current OS from your device. Heres how.

http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=101985&nUsePub=NO&jttst0=6_23871,23871,-1,0,&jtfm0=&etfm1=&jfn=ZGC81E19298A9321E38D51491551F331C8CCDA6801E50CC672F84B3EFDF0F6ACEF9DD42026E6C2FF1F9579670CF87CEAF79D

I couldnt use option 2 for some reason and had to use option 4 (complete format, luckily I had backed the files up earlier) but once it was reformatted the device showed up in the software and told me to update the OS. From here you just install the latest OS as you would normally.
The problem with what you and I did is that previous OS versions (1.7 in my case) dont support the keypad, you may be able to use the older version with a different keypad but I'm not sure.
Anyway, I hope you can fix it, good luck.

SOURCE: Error 1308. Source file not found: E:\PC\TI-NSP~2\Program Files\TI Education\TI-Nspire\locale.properties. Verify that the file exists and that you can access it.

Maybe the file is missing, or there is a defect on the disk. I suggest you go the education.ti.com website and download the trial software from there. Install it on your computer and validate it with the license that came with your calculator.