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    %% Product of Elements in Each Row  

%% 
% Create a 3-by-3 array whose elements correspond to their linear indices. 
A=[1:3:7;2:3:8;3:3:9]  

%% 
% Find the product of the elements in each row and reduce the length of
% the second dimension to 1. The length of the first dimension matches |size(A,1)|, and the length
% of the second dimension is 1.  
dim = 2;
B = prod(A,dim)