#remove history
rm(list = ls(all = TRUE))
#working directory
setwd("C:/Users/Marie_PC/Documents/Enseignements/M1_Model_Sys_Env/R")  

#initial conditions
L0<-5000
R0<-100

#values of the variables aL, bL, cR and dR
aL<-2
bL<-0.001
cR<-0.002
eR<-10

#time variable
t0<-0
tmax<-10
dt<-0.001