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Using non numeric in Matrix
07-23-2015, 10:21 PM
Post: #1
Using non numeric in Matrix
Hi All,

I hope someone can help. I am trying to solve a matrix problem with non numerics and I can't work it out. Obviously it will take numbers but if I try to enter "k" it tells me it's an error.

In fact struggling to find a way of doing it caused the Prime to reset and enter Exam mode! Can anyone help?

Thanks in advance
Jacqueline


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07-24-2015, 12:54 AM
Post: #2
RE: Using non numeric in Matrix
Hi Jacqueline,

I'm not exactly sure what you are doing wrong but here are some tips:

Make sure you are in the CAS, not Home.

Don't use the matrix writer (shift 4), instead, use the matrix template which you can access with this key:
.png  1507232037.png (Size: 2.24 KB / Downloads: 60) then pick the 6th position over on the top row:

   

Also make sure the variables you are using are not already defined: shift/mem/user variables and shift/mem/cas vars.

If you still can't get it, post a screen shot of your input or cut and paste the input into a reply.

Road
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07-24-2015, 02:04 AM
Post: #3
RE: Using non numeric in Matrix
Hi Roadrunner!

Thank a MILLION for your help. It's got to be as obvious as anything that I don't have a clue what I'm doing.

Thanks for your advice - I might actually end up passing the high school maths I failed as a teenager!

Cheers
Jacqueline
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