multiplying multiple values inside multiple matrices

Hello,

I have multiple matrices (all quite large, of equal size) that all need to be multiplied into a final matrix. For example, if I have a matrix [2, 2] and another [3, 2], I need to find a way to multiply these two to obtain [6, 4]. The trick being that each matrix value is multiplied by the corresponding value in the same location in all the other matrices.

Thanks

[Azzi Abdelmalek]

If

A=[1 2;3 4]
B=[1 2;3 4;5 6]

What is the expected result?

Answer 1

[Image Analyst]

Since they are all of the same size, and you want to multiply them element by element, you can simply dot multiply:

c1 = a .* b; % For only two matrices.
c2 = a .* b .* c .* d .* e;  % for 5 matrices.

[Image Analyst]

For your new question on means:

meanOf2 = (a + b) / 2; % Mean of two matrices.
meanOf5 = (a+b+c+d+e)/5; % Mean of 5 matrices.

Answer 2

[Azzi Abdelmalek]

Maybe this is what you want

A=[1 2;3 4]
B=[1 2;3 4;5 6]
out=cell2mat(arrayfun(@(x) x*B,A,'un',0))

[Azzi Abdelmalek]

I gave an example, what is the expected result?

[Image Analyst]

Your example did not fit his requirement of "of equal size".

[Azzi Abdelmalek]

I took [2, 2] , [3, 2] for the sizes