Multiply a 3D matrix with 2d matrix to get a vector

6 views (last 30 days)
Suppose:
  • X is a 3x3x6 matrix.
  • Y is a 3x3 matrix
  • Z is a 6x1 matrix
  • Y(ij) = X(ijk) * Z(k) ....(i,j=1,3 and k=1,6) as per Einstein's notation
Y and Z are known. How to obtain X ...

Answers (1)

David Sanchez
David Sanchez on 2 Jul 2014
The only solution that suits the dimensions of the matrices is this:
Y = rand(3);% Y is a 3x3 matrix
Z = rand(6,1);% Z is a 6x1 matrix
X = zeros(6,3,3); % % X is a 6x3x3 matrix.
for k=1:6
X(k,:,:) = Y/Z(k);
end
  1 Comment
Shashank
Shashank on 2 Jul 2014
Thanks for your reply...It appears that, I wrote the wrong dimensions for matrix X...X(3x3x6) matrix....Apologies for that..

Sign in to comment.

Categories

Find more on Arithmetic Operations in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!