What is wrong in multiplication of matrices



Try: matrix_element_mult : "." 

--Barton

-----maxima-bounces at math.utexas.edu wrote: -----


>and?the?following?block?matrices:?
>m:?matrix([P^^(-1),?0,?0],?[0,1,0],[0,0,1]);
>M:?matrix([-P,?transpose(A),?transpose(C)],?[A,?-P^^(-1),?0],?[C,?
>0,?-Q^^(-1)]);
>
>Then?multiply?it?as?follows?
>r1:?m?.?M?.?m;
>and?I?got?wrong?result.?