Model Epidemi Suspected Exposed Infected Recovered (SEIR) Pada Penyebaran COVID-19 Orde-Fraksional

This article discusses the solution to fractional order SEIR equation with help of Homotopy Perturbation Method (HPM). mathematical model is spread COVID-19 cases in Indonesia. In general, nonlinear Ordinary Differential Equation System (ODES) quite difficult solve analytically, so this research will transform ODES into a Fractional (FDES). The method used completing HPM method. for by obtained following steps: 1). Multiply each against embedding parameter and equate coefficient assumed infinite series find solution, 2). Simulate numerical solutions perform graph interpretation. simulation shows that susceptible human population, infected population without symptoms, recovered has increased, contrast decreased symptoms. its fairly small comparison solution.