Advances in Continuous and Discrete Models

Theory and Modern Applications

Table 3 Distinction between the conventional derivative and the Caputo–Fabrizio fractional derivative for \(S(t)\)

From: Dynamical analysis of a novel fractional order SIDARTHE epidemic model of COVID-19 with the Caputo–Fabrizio(CF) derivative

t	0	20	40	60	80
ode45	1	0.9975	0.4845	0.1501	0.1329
\({}^{CF}D^{\delta} (\delta =0.8)\)	1	0.9990	0.8165	0.2066	0.1482

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