function [f]=enzymzei(t,x)
% Beispiel eines nichtlinearen Ausgleichsproblems
%
% J. Kowalik, J.F. Morrison: Analysis of Kinetic Data for Allosteric
% Enzyme Reactions as a Nonlinear Regression Problem.
% Math. Bioscience, Vol. 2, 57-66, 1968.
%
% Helge Baumann, 06.10.1998, geaendert S.F.

f = (x(1,:) .* ( t.^2 + x(2,:) .* t ) ./ (t.^2 + x(3,:) .* t + x(4,:) ));
 
return;
