Qu9. For the disease model (M1), suppose that BK 0, R(t) > 0. Let us write K-S=Z. Show that it is possible to find numbers u₁ and u₂ for which the function L(Z, 1, R) = ₂2 +1+u₂R is a Lyapunov function that proves global stability of the disease-free equilibrium point (2, 1, R)= (0,0,0).

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Qu9. For the disease model (M1), suppose that
BK <p+a
and that the following conditions hold for every t > 0:
0<S(t) < K, I(t) > 0, R(t) > 0.
Let us write K-S=2.
Show that it is possible to find numbers u₁ and u₂ for which the function
L(Z, 1, R)= u₁Z+I+u₂R
is a Lyapunov function that proves global stability of the disease-free equilibrium point
(Z, 1, R) = (0,0,0).
Transcribed Image Text:Qu9. For the disease model (M1), suppose that BK <p+a and that the following conditions hold for every t > 0: 0<S(t) < K, I(t) > 0, R(t) > 0. Let us write K-S=2. Show that it is possible to find numbers u₁ and u₂ for which the function L(Z, 1, R)= u₁Z+I+u₂R is a Lyapunov function that proves global stability of the disease-free equilibrium point (Z, 1, R) = (0,0,0).
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