var A,B,C: Matrix; begin A.SetIt(2,2,False,[1,2, 2,4]); B.SetIt(2,2,False,[1,2, 2,4]); C.Mul(A,B); //or C := Mul(a,b); // but this is not the same as: c := a*b; //which is the same as c.MulElem(A,B);s end;