Hi, I have to solve several linear equations containing vectors and matrices symbolically. For example, I want to isolate for one variable in such an equation. Unfortunately, maple does not know that the variables are vectors/matrices and divides by them instead of multiplying with the inverse from the left, or matlab exchanges the order of the variables because it "thinks" they are scalars. Does anybody know what I can do to prevent this? Is there a special Toolbox for those calculations? Can I assign the variables a type like scalar/vector/matrix? Thanks, Zebro