= 1. Vectorize the following code snippets: a. (15 pts.) A(:,:,1) [1 2 ; 3 4]; A(:,:,2) = [-1 -2 ; [-1 -2 ; -3 -4]; A(:,:,3) = [O 1 ; 1 0]; B = [0.1 0.2 ; 0.2 0.1]; [m, n, r] = size (A) ; for ii = 1:r A(:,:,ii) = A(:,:,ii) + B; end