generate matrix in MAXIMA using an existing matrix

Question

I have a matrix a:matrix([1,2],[3, 4]) and b:matrix([1, 0],[0, 1]); And I would like to define a new bigger matrix C,

where C : ([a, b],[b, a]).

How can I do this in MAXIMA

Thank You

Answer 1

Try 'mat_unblocker'. To see documentation, enter

? mat_unblocker