I see, thank you very much.

I see, thank you very much.

True, ha, ha, sorry. The problem appears when I type the matrix in 2D-math form  (when I copied and pasted the code, it  was converted to 1D-math which works fine). But, what about matrices in the usual math form?

Thanks for your patience. 

I think this is sufficient for me at the moment. Thank-you

I think this is sufficient for me at the moment. Thank-you

hi and thanks for your comment, is it possible to establish some dir as default currentdir (independently of how maple is started)?. How can I know which maple procedures will use currentdir as default directory? Perhaps all of them? If not, what about the others? what does "home directory" mean in maple context? thanks again