l: [1, 2, 3];

M: matrix([2,3,5],[1,2,3],[5,1,6]);

K: matrix([0,a,0],[b,0,0],[%e,0,1]);

K + M;

M^^3;

echelon(M);

ident(2);

invert(M);

rank(M);

transpose(M);

zeromatrix(2, 3);