MATLAB: Is it possible to multiply Matrices which contains variables

matrix multiplication

I have 3 matrices of 6×6 dimension, all the elements are variables so now i have to write a code for the multiplication of those matrices, example

Rot1= [a b c ,d e f, g h i] (3×3) Rot2= [j k l, m n o, p q r] (3X3)

now i have to write a code for Rot1*Rot2, is it possible to do that, can anyone help me with that problem.

Thanks in advance

Agastya

Yes, it is. Symbolically (showing it for 2x2):

 syms a b c d e f g h
 mat1 = [a b; c d];
 mat2 = [d e; f g];
 mat3 = mat1*mat2

One way

z = permute( A, [2,1] );
B = z(:);

z = permute( A, [2,1] );
B = reshape( z, [],1 );

a=rand(4,3)
b=rand(1,6)
[n,m]=size(a)
p=numel(b);
c=reshape(bsxfun(@times, repmat(a(:)',numel(b),1),b')',n,m,p)