Fig. 1

Epidemiological model with \([\psi ,w]\)-Caputo-Fabrizio fractional derivatives with fractional orders \(\mu _1=0.9, \mu _2=0.85, \mu _3=0.95\) and \(w=e^{0.01x}, \psi (x)=x\).

Epidemiological model with \([\psi ,w]\)-Caputo-Fabrizio fractional derivatives with fractional orders \(\mu _1=0.9, \mu _2=0.85, \mu _3=0.95\) and \(w=e^{0.01x}, \psi (x)=x\).