% Function toperator : performs an operation on x
%
% Input : x, a 2x1 vector
% Output : Tx, a 2x1 vector
%
% Algorithm : basic operations
function Tx = toperator(x) %Function declaration.
                           %The file is nothing else than this function

%The function performs this computation below...
alpha = [1; 2];
beta = 0.9;
P = [0.5, 0.5; 0.2, 0.8];

Tx = alpha + beta * P * x; %Here is what the output will be. 
                            %Since in the declaration above, 
                            %we said Tx would be the output.
end