This form allows you to solve the differential equations of the
SIR model
of the spread of a disease.
This version of the equations incorporates births and deaths.
S'(t)  =  β(S+I+R)  α S I  μ S 
I'(t)  =  α S I  γ I  μ I 
R'(t)  =  γ I  μ R 
Enter the following data, then click on Show Solution.
Parameters:

Initial conditions:

Time:
