MATLAB: Elementwise product ef elements of a vector times a matrix

Question

Hello,

I have a 2×2 matrix, imagine:

A=[1 2;3 5];

And a vector, for example of dimension 6:

b=1:6;

I need to construct a matrix 2x(6×2)=2×12, in which I have 6 2×2 matrices obtained as the product of matrix A times the corresponding element of vector b.

Is there any direct way of doing this without a loop and avoiding repeating the elements (i.e. constructing two 2×12 matrices and multiply them elementwise)?

Thanks in advance,

Ana

Answer 1

kron(b,A)