(c) Consider the system x'(t) =ay² - x, y' (t) = -y-ax². x' (t)-y-2x, y'(t)=2x-y-x³.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.6: Applications And The Perron-frobenius Theorem
Problem 69EQ: Let x=x(t) be a twice-differentiable function and consider the second order differential equation...
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plz solve question 5(a) it within 30-40 mins I'll give you multiple upvote
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Question 4
(a) Show that V(x, y) = ln(1 + ²) + y² is a Lyapunov function for the system
x'(t)= x(y-1), y(t)=-
1+x²
(b) Let a > 0. Show that V(x, y) x² + 2y2 is a strict Lyapunov function for the
system
x' (t)=ay² -x, y' (t)=-y-ax².
(c) Consider the system
x' (t)-y-2x, y(t)=2x-y-x³.
Using the Lyapunov function V = (x + y)² +¹. show that the origin is Lyapunov
stable.
Question 5
(a) Using the Lyapunov function candidate V(x, y, z)=(x² + y² +22), investigate
stability of the origin of the system
x' (t) = -x + x²z, y(t)=z, 2'(t)=-y-z-x³.
(b) Using the Lyapunov function candidate V(x, y, z) =
stability of the origin of the system
2²+¹, investigate
x' (t)= y, y' (t)-³-y³-2³, 2'(t)=-z+y.
Transcribed Image Text:I 1 Question 4 (a) Show that V(x, y) = ln(1 + ²) + y² is a Lyapunov function for the system x'(t)= x(y-1), y(t)=- 1+x² (b) Let a > 0. Show that V(x, y) x² + 2y2 is a strict Lyapunov function for the system x' (t)=ay² -x, y' (t)=-y-ax². (c) Consider the system x' (t)-y-2x, y(t)=2x-y-x³. Using the Lyapunov function V = (x + y)² +¹. show that the origin is Lyapunov stable. Question 5 (a) Using the Lyapunov function candidate V(x, y, z)=(x² + y² +22), investigate stability of the origin of the system x' (t) = -x + x²z, y(t)=z, 2'(t)=-y-z-x³. (b) Using the Lyapunov function candidate V(x, y, z) = stability of the origin of the system 2²+¹, investigate x' (t)= y, y' (t)-³-y³-2³, 2'(t)=-z+y.
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