Abstract

In mathematics, to describe and find solutions to problems that occur in everyday life can be obtained using mathematical models in the form of differential equations (DE). The mathematical model that is often encountered in every search for solutions and a simple mathematical model is the SIR mathematical model for epidemics. This study was conducted to find a numerical solution to the mathematical model of the spread of Covid-19 in West Sulawesi Province using the Euler-Heun method. Covid-19 is in the form of a system of differential equations that includes the variables S (Susceptible), I (Infected), and R (Recovered). reduce to susceptible (S), infected (I), and cured or recovered (R) individual grades as initial grades.This means that the infected population will continue to decline in the future. Keywords: Covid-19, SIR, Euler-Heun method, Numerical solution