To get all the row cells in a columns, the best way is to flip the matrix using the 'transpose' command:
disp mstm^T[3]
This should give you the data you want.

Then, about the indirection thing (#), it works like this:
"hello"->var1
"test"->#var1
var1 will then contain "hello", and hello will contain "test".
This will also work with values in a matrix ("test"->#mat[1,1]).

For the string searching, I assume you want too look through a list and or matrix?
As far as I know, you can't search matrixes and lists. You will have to make your own routine to do that:

This is for a matrix:
"findme"->searchstr
0->result
rowdim(matrix)->rowsize
coldim(matrix)->colsize
for yyy,1,rowsize
  for xxx,1,colsize
    if matrix[yyy,xxx] = searchstr then
      1->result
      exit
    endif
  endfor
endfor

searchstr is the string (it can also be a number) you want to search for.
If it is found, result will be 1, and the coordinates will be in yyy and xxx.
It might be that I switched rowsize and colsize, but thats easy to fix if its wrong.
You only need one for loop if you are searching a list.
Another way to check if something is in your matrix and/or list, but you don't need to know the position is this:
instring(string(matrix),"searchme")->result
If result is not 0, is means that "searchme" is in the matrix. This will also be faster than the above routine, but you don't have an accurate index.

I'm glad you found it helpful

If you need any other help, I'll be here

Uses the TI-Nspire CX CAS the same language as the TI 84+ or is it a different one??

It uses a different one - the Nspire variant of TI-BASIC, and also Lua.

 :'(
Do you know where I can get a guide which tells me all differents between TI83-Basic and this one?












Do you mean from education.ti.com ??

http://education.ti.com/calculators/downloads/US/Guidebooks/Search/
Which is the correct one?

hello guys, I am also new to the forum and am a complete rookie with the TI Nspire CX CAS. I have had it 48 hours, primary purpose is college math but I will eventually be using it for science as well. I have some very basic questions that I was hoping to get answered but as time goes on I'm sure they will develope into more complicated questions too.
 me trying to comunicate with it right now looks like this 

the questions:
1 is the TI CAS for dummies a worthwhile pick up for a complete beginer?
2 while multiplying polynominals it doesn't correctly solve the equation. Is there a settings menu to tell it to do so or another way of inputting the problem to get the right answer?
3 along the same lines as #2 but on some equations it just refrazes the question instead of solving it (im using it in scratchpad mode if that matters)

a few examples to better explain it...sorry if you didnt need this part, just wanting to be clear.

if you input (x+1)^2
it will refraze as (x+1)*(x+1)
if you input the refraze the answer does not include x^2
I know how to do the math as 3 seperate problems to get the answer but is there a way to tell the CAS to solve it in 1 step ?
Similarly if you were to input -5(x+1)
it will refraze as 5(-x-1)
i used simple numbers where the math is easy to do in your head to make the explanation easier but is there a way to tell it to solve the equation ?
thanks in advance for any help provided