matrix

[resolveddd]

how do I call just a column of a matrix    

in matlab  A[ : ,1]  how is that done on the prime

[Joe_Horn]

In Home and normal programs only (not CAS):

M1(-2) → column 2 of matrix M1

M1(2) → row 2 of matrix M1

If you need a syntax that works in CAS as well, use the col() and row() commands:

col(M1, 2) → column 2 of matrix M1

row(M1, 2) → row 2 of matrix M1

Disclaimer: I don't work for HP. I'm just another happy HP calculator user.

[resolveddd]

thanks so much, that did it. I spend an hour or two searching the manual and if you don't know the secret code you are pretty much helpless