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    %% Reverse Cumulative Product  

%% 
% Create a 3-by-3 matrix of random integers between 1 and 10. 
rng default;
A = randi([1,10],3)  

%% 
% Calculate the cumulative product along the columns. Specify the |'reverse'|
% option to work from bottom to top in each column. The result is the same size as |A|.   
B = cumprod(A,'reverse')