loop of linear combination of columns

Hi,

Can Any one help me to calculate this θ matrix without loop?

let

A=randn(M,N)

B=randn(J,M)

I want to calculate the θ matrix using this formula

: the column vector of θ

: the elemnt in the row vector and column vector of A

: the column of B

thanks.

[Rena Berman]

(Answers Dev) Restored edit

Answer 1

[Ameer Hamza]

Isn't it just

theta = B*A;

[Montassar Bellili]

thanks sir.