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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: Control Eng Pract. 2014 Dec 1;33:161–173. doi: 10.1016/j.conengprac.2014.09.011

Figure 4.

Figure 4

ARX model step responses for the drug-FM symptoms transfer function along with the second order continuous time approximation for the case of Model 5. As the model fit improves from Model 1 to 5, the steady-state gain settles at approximately −2.5.