function yhat = and_1028(beta, w)
%Parameter Assignations
A = beta(1);
B = beta(2);
C = beta(3);
D = beta(4);
E = beta(5);

%independent variables
arab = w(:,1);
theo = w(:,2);


%Model 
yhat = A*P./(B*(1+ (theo.*(C./(1+D./arab))./E)));
